Continuing Thursday / 9:00pm BBC Two 60 min.
Horizon is BBC Two's flagship 50-minute science documentary series. In September 2004 it celebrated its 40th anniversary and it continues to enjoy outstanding critical acclaim. Recognised as the world leader in its field, it regularly wins a sweep of international science, medical and environmental film accolades, and has recently won the Royal Television Society Award and the Prix Italia. In 2002, the British Academy of Film & Television Arts presented Horizon with the BAFTA Television Award for Best Factual Series or Strand. In 2003 it won the prestigious Images et Science award for best medical documentary and the Carl von Linne Award at the Living Europe film festival in Sweden. That year, a Horizon co-production with WGBH Boston won the Emmy for best documentary.

Season 2017

6 Episodes

Horizon follows an international team of volcanologists in Iceland as they draw fascinating parallels with the volcanoes on Earth and those elsewhere in the solar system. Through the team's research, we discover that the largest volcano of the solar system - Olympus Mons on Mars - has been formed in a similar way to those of Iceland, how a small moon of Jupiter - Io - has the most violent eruptions anywhere, and find out that a moon of Saturn called Enceladus erupts icy geysers from a hidden ocean. Computer graphics combined with original NASA material reveal the spectacular sights of these amazing volcanoes. Along the way, we learn how volcanoes are not just a destructive force, but have been essential to the formation of atmospheres and even life. And through these volcanoes of the solar system, scientists have discovered far more about our own planet, Earth- hat it was like when Earth first formed, and even what will happen to our planet in the future.
May 23 2017
Horizon investigates claims of signals from extra terrestrials. In 2006, Duncan Lorimer and Maura McLaughlin discovered a enigmatic signal from space, known as a fast radio burst. It was a pulse of radiation so bright, it didn't appear to be caused by any known object in the universe. Explanations ranged from colliding neutron stars to communication signals from an alien civilisation. Scientists have been searching the cosmos for strange signals like the 'Lorimer Burst' for more than 50 years, ever since astronomer Frank Drake convened a secretive meeting of a group of scientists calling themselves the 'Order of the Dolphin'. The film ends with scientists latest search for extra-terrestial intelligence - Horizon obtained exclusive access to film researchers at the Green Bank Telescope searching for radio signals from 'Tabby's Star' - a star so mysterious some scientists believe might be surrounded by a Dyson Sphere - a vast energy collector built by advanced aliens.
May 16 2017
Horizon follows three people living with voices, hallucinations and paranoia, to explore what causes this kind of phenomena. Providing a rare first-hand insight into these experiences, they reveal just what it is like to live with them day-to-day. They examine the impact of social, biological and environmental influences on conditions traditionally associated with insanity, such as schizophrenia and psychosis, and within the film they look at how new ways of understanding the brain are leading to a dramatic change in treatments and approaches and examine whether targeting the root causes of psychosis can lead to recovery. Above all, they try to uncover why it happened to them - and whether it could happen to you.
May 02 2017
Comedian and impressionist Rory Bremner is on a personal mission to uncover the science of ADHD (attention deficit hyperactivity disorder), a condition which he has suspected he has. In this film, Rory learns about the science of ADHD, goes for a diagnosis and tries the drug methylphenidate (also known as Ritalin) for the first time - just before walking on stage.
Apr 25 2017
The Horizon team have gathered together a team of scientists and doctors to investigate the incredible, natural material that is growing out of our heads - our hair. With access to the research laboratories of some of the world's leading hair care companies, including L'Oreal and ghd, the team explore the latest cutting-edge research and technology designed to push the boundaries of hair and hair care. Each one of us has a unique head of hair - an average of 150,000 individual hair strands growing approximately one centimetre every month. Over your lifetime, that is over 800 miles. The time and effort we put into styling, sculpting and maintaining this precious material has created a global hair care market worth a staggering £60 billion pounds. With such high stakes, it is inevitable that when developing hair-care products, science and business operate hand in hand. The team reveal how this industry science compares to the rigorous academic standards that they are used to. These investigations also reveal why we care so much about our hair, and whether or not it is worth splashing out on expensive shampoos. They uncover the magic ingredients found in conditioners and lay bare the secrets of the shiny, glossy hair seen in the adverts.
Jan 23 2017
Imagine if the food you eat could 'clean' your body and make you feel well. Dr Giles Yeo investigates the latest diet craze and social media sensation - clean eating. In a television first, Giles cooks with Ella Mills, the Instagram entrepreneur behind Deliciously Ella, one of the most popular brands associated with clean eating, and examines how far her plant-based cooking is based on science. She tells him clean has lost its way: "Clean now implies dirty and that's negative. I haven't used it, but as far as I understood it when I first read the term, it meant natural, kind of unprocessed, and now it doesn't mean that at all. It means diet, it means fad". Giles sifts through the claims of the Hemsley sisters, who advocate not just gluten-free but grain-free cooking, and Natasha Corrett, who popularises alkaline eating through her Honestly Healthy brand. In America, Giles reveals the key alternative health figures whose food philosophies are influencing the new gurus of clean. He discovers that when it comes to their promises about food and our health, all is not always what it appears to be. Inside a Californian ranch where cancer patients have been treated with alkaline food, Giles sees for himself what can happen when pseudoscience is taken to a shocking extreme.
Jan 19 2017

Season 2016

16 Episodes

We love talking about the weather - is it too hot or too cold, too wet or too windy? It's a national obsession. Now scientists have started looking to the heavens and wondering what the weather might be like on other planets. Today, we are witnessing the birth of extra-terrestrial meteorology, as technology is allowing astronomers to study other planets like never before. They began with our solar system, sending spacecraft to explore its furthest reaches, and now the latest telescopes are enabling astronomers to study planets beyond our solar system. Our exploration of the universe is revealing alien worlds with weather stranger than anyone could ever have imagined - we've discovered gigantic storm systems that can encircle entire planets, supersonic winds, extreme temperatures and bizarre forms of rain. On some planets, the temperatures are so hot that the clouds and rain are believed to be made of liquid lava droplets, and on other planets it is thought to rain precious stones like diamonds and rubies. We thought we had extreme weather on Earth, but it turns out that it is nothing compared to what's out there. The search for the weirdest weather in the universe is only just beginning.
Oct 23 2016
Alice Roberts explores the latest discoveries in the study of human origins, revealing the transformation that has been brought about in this field by genetics. Traditional paleo-anthropology, based on fossils, is being transformed by advanced genome sequencing techniques. We now know that there were at least four other distinct species of human on the planet at the same time as us - some of them identified from astonishingly well-preserved DNA extracted from 50,000-year-old bones, others hinted at by archaic sections of DNA hidden in our modern genome. What's more, we now know that our ancestors met and interacted with these other humans, in ways that still have ramifications today. Alice uses these revelations to update our picture of the human family tree.
Oct 12 2016
The acerbically witty and severely facially disfigured broadcaster Adam Pearson presents a personal film about genetics. He and his twin brother Neil are genetically identical and both share the same genetic disease, Neurofibromatosis 1 (Nf1) - yet they are completely different. Adam's face is covered with growths, whereas Neil has none. Neil has short-term memory loss, whereas Adam is razor sharp. How can the same genetic disease affect identical twins so differently? Adam is on the cusp of a successful film and television career, but the disease has left tumours on his face that are growing out of control and he could lose his sight. For years, everyone thought Adam's brother Neil had escaped symptoms, but today his life is governed by epilepsy and a mysterious memory loss that suddenly came on during his teens. Determined to save their future, Adam tries to find out why the disease affects the twins so differently and see if there is anything he can do to stop it from tearing their lives apart.
Aug 25 2016
Inside CERN 2016x13
With exclusive behind-the-scenes access, Horizon follows the highs and lows of an extraordinary story in particle physics. In June 2015, teams at CERN started running the large hadron collider at the highest energy ever. Rumours quickly emerged that they were on the brink of a huge discovery. A mysterious bump in some data suggested a first glimpse of a brand new particle that could change our understanding of how the universe works. A new particle could hint at extra dimensions and help us understand the very beginning of the universe - but first the team has to find it. Horizon follows the scientists as they hunt for the elusive signals that would prove if there is a new particle or if it is just noise from their machine.
Aug 10 2016
Dr Xand van Tulleken investigates the world of performance-enhancing drugs - from the athletes seeking the rewards of fame, glory and lucrative sponsorship deals to the hundreds of thousands of people in the UK now regularly taking anabolic steroids to look good and buff up. What are these drugs? What do they do to the body? And is it worth it? Xand's investigation reveals the extraordinary gamble dopers take with their health. Long-term effects include kidney failure, cognitive impairment and testicular shrinkage, and Xand witnesses how users are self-experimenting with drugs that have not yet been approved for human use. Horizon uncovers the new frontier of doping, from new molecules to gene therapy - where the genes that control muscle growth are altered. These new methods could be completely undetectable by the doping authorities. Finally, with the help of his twin brother Chris, Xand discovers the legal ways some athletes try to gain the edge.
Jul 19 2016
Over 62% of adults in the UK are currently overweight or obese and this figure is set to rise. A common attitude is that obese people should be ashamed - it is their fault, they have no will power and if they could just 'eat less and exercise more', the problem would soon be solved. Yet, despite millions of pounds being spent on this simple message, the UK is getting fatter every year. Cambridge geneticist Dr Giles Yeo believes that for many obese people, simply eating less is a lot harder than you might think - and he is taking a road trip around the UK and America to uncover why. He meets the real people behind some of the more shocking newspaper headlines and, through their stories, reveals surprising truths which dispel commonly held myths about obesity. He gains access to scientists and doctors trialling cutting-edge techniques to tackle the crisis - from a 'miracle' hormone injection to a transfusion of faecal matter, and even learns a thing or two about his own size and relationship with food.
Jun 07 2016
Michael Mosley investigates the dramatic rise in e-cigarettes. They're everywhere these days, but what does the latest scientific research on them reveal? Michael reveals what e-cigarettes are really doing to your health. Are they really better for you than cigarettes? What is actually in them? Is passive vapour harmful? And can they really stop you from smoking? Michael meets some of the scientists around the world studying them, asks a group of volunteers to try to give up smoking regular cigarettes using them, and even takes up 'vaping' himself, smoking an e-cigarette every day for a month to see the effects on his own health - no easy task for such a committed non-smoker.
May 22 2016
Horizon investigates a new era of Alzheimer's research, which is bringing hope to millions of sufferers across the world. New scanning and gene technology is allowing scientists to identify the disease at its earliest stages, often 15 years before symptoms appear and the brain cells are destroyed. A series of new drugs trials in Colombia, the USA and Europe are showing startling success in reducing beta amyloid, the protein which is a hallmark of the disease. It is also becoming clear that changes in lifestyle can prevent the development of the disease. A new system inside the brain has been discovered which clears amyloid when we are in deep sleep, but allows it to accumulate if we don't sleep well. The programme reveals that for sufferers in the early stages of the disease, brain connections, or synapses, can be strengthened and even replaced by absorbing enough of the right nutrients. A UK-wide trail helps sufferers in the early stages to concentrate on improving everyday tasks, and in the process not only make their lives easier, but helps to reactivate the planning and organisational parts of the brain. In an ageing world, where the biggest risk of developing Alzheimer's is old age, the scientific breakthroughs in Alzheimer's disease are bringing hope where once there was despair.
May 11 2016
Antarctica is the last great wilderness. It's the coldest, windiest, driest and most isolated place on Earth. And every winter, for over three months of the year, the sun never rises. But it's also home to the British Antarctic Survey's Halley Research Station. A veteran of living and working at Halley in the early eighties, BBC weatherman Peter Gibbs makes an emotional return to the place he once called home. A place that, during his time, was key to the discovery of the ozone hole. The journey starts with an arduous 12-day, 3000-mile voyage onboard the RRS Ernest Shackleton. Once on the ice shelf, Peter is delighted to finally arrive at the futuristic research station and marvels at the cutting edge science being done at Halley today. From vital discoveries about how our lives are vulnerable to the sun's activities, to studying interplanetary travel and the threat of man-made climate change. But Peter's journey is also something of a rescue mission. The research station's home is a floating ice shelf that constantly moves and cracks, and the ice shelf has developed a chasm that could cast Halley adrift on a massive iceberg.
May 04 2016
Dr Xand Van Tulleken is single and looking for love. Mathematician Dr Hannah Fry wants to use him as her guinea pig to test whether the algorithms that dating sites use to match people actually work. While Hannah builds a dating site, Xand meets the scientists investigating online dating - and learns what pictures to use and what to write in his profile. He tries out a 'bot' that has automated a swiping app and has an MRI scan to find out whether his brain is equipped for love. 50 members of the public take part in some mini experiments at a date night - and Xand goes on various dates to test whether the algorithm is better than him choosing randomly.
Apr 25 2016
Liz Bonnin presents a controversial and provocative episode of Horizon, investigating how new scientific research is raising hard questions about zoos - the film explores how and why zoos keep animals, and whether they need to change to keep up with modern science or ultimately be consigned to history. Should zoos cull their animals to manage populations? Liz travels to Copenhagen Zoo, who killed a giraffe and fed it to the lions, to witness their culling process first hand. They think it is a natural part of zoo keeping that is often swept under the carpet. Should some animals never be kept in captivity? In a world exclusive, Liz visits SeaWorld in Florida and asks if captivity drove one of their orcas to kill his trainer. But could zoos be the answer to conserving endangered species? Liz examines their record, from helping breed pandas for the wild to efforts to save the rhinos. She meets one of the last surviving northern white rhinos and discovers the future of this species now lies in a multimillion-dollar programme to engineer them from stem cells. Veteran conservation scientist Dr Sarah Bexell tells Liz the science of captive breeding is giving humanity false hope.
Apr 17 2016
This is the story of how our solar system will be transformed by the aging sun before coming to a spectacular end in about eight billion years. Astronomers can peer into the far future to predict how it will happen by analysing distant galaxies, stars and even planets in their final moments. In this film, Horizon brings these predictions to life in a peaceful midwestern town that has a giant scale model of the solar system spread out all over the city. As it ages, the sun will bloat into a red giant star, swallowing planets... as well as half the town. The fate of the Earth itself hangs in the balance. How will the solar system end?
Apr 13 2016
The oceans define the earth. They are crucial to life and we used to think that they were unique to our blue planet. But we were wrong. It has recently been discovered that there are oceans all over our solar system and they are very similar to our own. And now scientists are going on an epic journey in search of new life in places that never seemed possible. Nasa is even planning to dive to the depths of a strange, distant ocean in a remarkable submarine. Horizon discovers that the hunt for oceans in space is marking the dawn of a new era in the search for alien life.
Apr 06 2016
Horizon looks at dark energy - the mysterious force that is unexpectedly causing the universe's expansion to speed up. The effects of dark energy were discovered in 1998 but physicists still don't know what it is. Worse, its very existence calls into question Albert Einstein's general theory of relativity - the cornerstone of modern physics. The hunt for the identity of dark energy is on. Experiments on earth and in space generate data that might provide a clue, but there are also hopes that another Einstein might emerge - someone who can write a new theory explaining the mystery of the dark energy.
Mar 30 2016
This is the story of an extraordinary scientific adventure - the attempt to control gravity. For centuries, the precise workings of gravity have confounded the greatest scientific minds - from Newton to Faraday and Einstein - and the idea of controlling gravity has been seen as little more than a fanciful dream. Yet in the mid 1990s, UK defence manufacturer BAE Systems began a ground-breaking project code-named Greenglow, which set about turning science fiction into reality. On the other side of the Atlantic, Nasa was simultaneously running its own Breakthrough Propulsion Physics Project. It was concerned with potential space applications of new physics, including concepts like 'faster-than-light travel' and 'warp drives'. Looking into the past and projecting into the future, Horizon explores science's long-standing obsession with the idea of gravity control. It looks at recent breakthroughs in the search for loopholes in conventional physics and examines how the groundwork carried out by Project Greenglow has helped change our understanding of the universe. Gravity control may sound like science fiction, but the research that began with Project Greenglow is very much ongoing, and the dream of flying cars and journeys to the stars no longer seems quite so distant.
Mar 23 2016
The gripping story of how one Russian internet millionaire is turning to cutting-edge science to try to unlock the secret of living forever. Dmitry Itskov recently brought together some of the world's leading neuroscientists, robot builders and consciousness researchers to try to devise a system that would allow him to escape his biological destiny. Entering Dmitry's seemingly sci-fi world, Horizon investigates the real science inspiring his bold plan to upload the human mind to a computer. There are doubters - like the major neuroscientist who tells us 'it's too stupid, it simply cannot be done'. But as we also meet the Japanese maker of Erica, one of the world's most human-like robots, who tells us the destiny of humans is to become robots to overcome the constraints of time, see how a quadriplegic Californian man is already controlling a robot arm with his thoughts, and explore the groundbreaking work of the scientist behind the world's largest neuroscience project - the $6 billion US Brain Initiative - who tells us the effort to map all the activity of the brain could be a crucial step towards mind uploading, Horizon asks is it really so crazy to think Dmitry Itskov could succeed in his goal of bringing about immortality for all of us within 30 years?
Mar 16 2016

Season 2015

12 Episodes

The video game industry is a global phenomenon. There are over 1.2 billion gamers across the planet, with sales projected soon to pass $100 billion per year. But their very popularity fuels the controversy that surrounds them. They frequently stand accused of corrupting the young - of causing violence and addiction. But is this true? Horizon reveals a scientific community deeply divided. Some are convinced that video games incite aggression. Others insist they have no effect whatsoever on real-world violence. But away from the controversy, there is a growing body of evidence that suggests video games may help keep the brain sharp, and could soon revolutionize how we combat mental decline as we age.
Sep 16 2015
Forget the big bang. The real moment of creation was the Cosmic Dawn - the moment of first light. This is the scientific version of the story of Genesis. The big bang gets all the credit for creating our universe. But in fact, the universe it gave was dark and boring. There were no stars, no galaxies, just a vast, black fog of gas - the cosmic dark ages. But, after a hundred million years of nothing, came a dramatic moment of transformation - the Cosmic Dawn. It's the moment the first stars were born, the moment that lit up the Universe, and made the first structure and the first ingredients of life. This was the real moment of creation. Astronomers are now trying to witness the cosmic dawn. For the first time they have the tools to explore the very first stars of the universe and to tell the scientific story of our creation.
Sep 09 2015
Imagine a world where dinosaurs still walk the earth. A world where the Germans won World War II and you are President of the United States. Imagine a world where the laws of physics no longer apply and where infinite copies of you are playing out every storyline of your life. It sounds like a plot stolen straight from Hollywood, but far from it. This is the multiverse Until very recently the whole idea of the multiverse was dismissed as a fantasy, but now this strangest of ideas is at the cutting edge of science.And for a growing number of scientists, the multiverse is the only way we will ever truly make sense of the world we are in. Horizon asks the question: Do multiple universes exist? And if so, which one are we actually in?
Sep 02 2015
Most of us think that Obsessive Compulsive Disorder (OCD) is just over fussy tidying. But it's actually much more serious. Sophie has to check that she hasn't killed people, looking for dead bodies wherever she goes, Richard is terrified of touching the bin, and Nanda is about to have pioneering brain surgery to stop her worrying about components on her body - that her eyebrow might not be aligned or that she has bad breath. Professor Uta Frith meets the people living with OCD, looks at the therapy available and asks what neuroscience can offer by way of a cure.
Aug 26 2015
Horizon reveals how new archaeological discoveries are painting a different picture of the very first native Britons. For centuries it's been thought that these hunter-gatherers lived a brutal, hand-to-mouth existence. But extraordinary new evidence has forced scientists to rethink who these people were, where they came from and what impact they had on our early history. Now, our impression is of a hardy, sophisticated people who withstood centuries of extreme climate change and a devastating tsunami that was to give birth to the island nation of Britain. Their way of life may even have survived beyond its greatest ever threat - the farming revolution.
Aug 19 2015
Michael Mosley puts himself through a battery of health tests available to people who feel perfectly well. From an expensive heart scan to a new national screening procedure to detect the earliest signs of bowel cancer, Mosley sets out to discover which if any of the tests are worth doing.
Aug 12 2015
In 2014, the International Space Station had to move three times to avoid lethal chunks of space debris and there is an increasing problem of satellites mysteriously breaking down. With first-hand accounts from astronauts and experts, Horizon reveals the scale of the problem of space junk. Our planet is surrounded by hundreds of millions of pieces of junk moving at 17,000 miles per hour. Now the US government is investing a billion dollars to track them, and companies around the world are developing ways to clear up their mess - from robot arms to nets and harpoons. Horizon investigates the science behind the hit film Gravity and discovers the reality is far more worrying than the Hollywood fiction.
Aug 05 2015
How bad can our drinking pattern be for our health? Doctors and genetically identical twins Chris and Xand van Tulleken want to find out. With the current drinking guidelines under review, the twins embark on self-experimentation to see the effects of different drinking patterns on their health. With Chris drinking 21 units spread evenly across the week and Xand having his 21 in single weekly binges, how will their bodies differ after a month? Catching up with the latest research into alcohol drinking patterns, we ask if moderate drinking is genuinely good for us - and whether binge drinking is really that bad.
May 20 2015
The team investigate the use of modern medical technology to scan Egyptian animal mummies from museums across the world. By creating 3-D images of their content, experts are discovering the truth about the strange role animals played in ancient Egyptian belief. This episode of Horizon meets the scientists working in Egypt who are exploring the ancient underground catacombs where mummies were originally buried to reveal why the ancient Egyptians mummified millions and millions of animals.
May 11 2015
Scientists genuinely don't know what most of our universe is made of. The atoms we're made from only make up four per cent. The rest is dark matter and dark energy (for 'dark', read 'don't know'). The Large Hadron Collider at CERN has been upgraded. When it's switched on in March 2015, its collisions will have twice the energy they did before. The hope is that scientists will discover the identity of dark matter in the debris. The stakes are high - because if dark matter fails to show itself, it might mean that physics itself needs a rethink.
Mar 17 2015
Horizon travels to the South Pole to tell the inside story of one of the greatest scientific quests of our time. In March 2014, a discovery there made headlines around the world, with evidence from the Big Bang itself - ripples in space and time called 'gravitational waves'. In the world of theoretical physics, this was a bombshell. For some it meant Nobel Prizes, while for others, their ideas were in shreds. This is the story of this extraordinary discovery, and what happened when it all began to unravel...
Mar 10 2015
New planets are now being discovered outside our solar system on a regular basis, and these strange new worlds are forcing scientists to rewrite the history of our own solar system. Far from a simple story of stable orbits, the creation of our solar system is a tale of hellfire, chaos and planetary pinball. It's a miracle our Earth is here at all.
Mar 03 2015

Season 2014

15 Episodes

Dr Michael Mosley and Professor Alice Roberts investigate if male and female brains really are wired differently. New research suggests that the connections in men and women's brains follow different patterns, patterns which may explain typical forms of male and female behaviour. But are these patterns innate, or are they shaped by the world around us? Using a team of human lab rats and a troop of barbary monkeys, Michael and Alice test the science and challenge old stereotypes. They ask whether this new scientific research will benefit both men and women - or whether it could drive the sexes even further apart.
Sep 29 2014
The Ebola virus. No-one knows exactly where it comes from but one thing is certain - it's one of the most virulent infections known to science. This special episode of Horizon meets the scientists and doctors from all around the world looking for the cure and hears first-hand accounts of what it's actually like to catch - and survive - this terrible disease.
Sep 10 2014
Twenty-five years after the world wide web was created, it is now caught in the greatest controversy of its existence: surveillance. With many concerned that governments and corporations can monitor our every move, Horizon meets the hackers and scientists whose technology is fighting back. It is a controversial technology, and some law enforcement officers believe it is leading to 'risk-free crime' on the 'dark web' - a place where almost anything can be bought, from guns and drugs to credit card details. Featuring interviews with the inventor of the world wide web, Sir Tim Berners-Lee, and the co-founder of WikiLeaks, Julian Assange, Horizon delves inside the 'dark web'.
Sep 03 2014
Changes to the bacteria that live inside all of us are responsible for increasing the number of people with allergies, suggests new research. In this episode of Horizon, the show investigates this claim by conducting a unique experiment with two allergic families in order to find out just what it is in the modern world that is to blame. With a raft of mini cameras, GPS units and the very latest gene sequencing technology, the show discovers how the western lifestyle is impacting their bacteria. Why are these changes making people allergic? And what can be done to put a stop to the allergy epidemic?
Aug 27 2014
Dr Michael Mosley examines the impact eating meat has on the planet and finds out what meat eco-friendly carnivores should be buying: free-range organic or factory-farmed meat.
Aug 20 2014
Dr Michael Mosley seeks to establish the truth about meat. Are those barbecue favourites like burgers and sausages really that bad? Should we all go vegetarian instead? Michael uncovers the latest science and puts it to the test on a high-meat diet. Will eating beef and bacon every day be bad for him? What meat should a healthy carnivore be buying?
Aug 18 2014
Over the last few years, our weather in Britain has become more extreme. Last winter was the wettest ever recorded, as deadly storms battered the country for weeks on end. But previous winters have seen bitter lows of -22, as Britain was plunged into a deep freeze. What everyone wants to know now is: why is our weather getting more extreme, can we expect to see more of it in the future, and has it got anything to do with climate change? In this episode of Horizon, physicist Dr Helen Czerski and meteorologist John Hammond make sense of Britain's recent extreme weather and discover that there is one thing that connects all our recent extreme winters - the jet stream, an invisible river of air that powers along 10 km above us. What's worrying is that recently it has been behaving rather strangely. Scientists are now trying to understand what is behind these changes in the jet stream. Helen and John find out if extreme winters are something we may all have to get used to in the future.
Jul 17 2014
Horizon tells the inside story of the search for Malaysia Airlines flight MH370. With access to the key players on the frontline in the southern Indian Ocean and the British satellite engineers who tracked the plane's final hours, Horizon breaks open the biggest mystery in aviation history. The film reveals how MH370 disappeared in a radar blind spot; what investigators believe happened to the aircraft in its last minutes; and how the area in which it could be found is still to be searched. Plus Horizon examines the new technologies, like black box streaming and enhanced air traffic surveillance, that mean an airliner should never vanish without trace again.
Jun 17 2014
To celebrate its 50th birthday, Horizon invites the public to play a role in tackling the greatest challenges facing science today. This special episode of Horizon launches the £10 million Longitude Prize 2014 - a prize developed by Nesta, with Technology Strategy Board as funding partner, to find solutions to a new scientific challenge. The Longitude Prize 2014 commemorates the 300th anniversary of the original Longitude prize - a £20,000 reward for finding a way to determine longitude at sea accurately. The prize was overseen by the Board of Longitude, comprising the scientific, political and naval leaders of the day. A range of possible methods were developed with the Board of Longitude's support, but Yorkshire clockmaker John Harrison was the biggest winner with his marine chronometer clock, which enabled ships accurately and reliably to determine their longitude, avoiding potential shipwreck and enabling Britain's global trade to flourish. Horizon explores six potential challenges nominated by a new Longitude Committee, and launches a vote to determine which should be put forward as the new Longitude prize. The question is 'if you had £10 million to make one change to the world, what would you do?' Professor Alice Roberts hosts the episode from the Royal Observatory at Greenwich, examining the history of the Longitude prize, and the ambition and rationale behind the project. The programme also features Prof Alice Roberts, Michael Mosley, Liz Bonnin, Prof Iain Stewart, Dr Helen Czerski, Dr Kevin Fong and Dr Saleyha Ahsan examining each of the six nominated challenges in detail.
May 22 2014
When pioneering developmental psychologist Professor Uta Frith started her training back in the 1960s, she met a group of beautiful, bright-eyed young children who seemed completely detached from the rest of the world. It turned out they had just been given the then-new diagnosis of autism. Uta passionately wanted to know more about these children, and they inspired her to dedicate the rest of her career to studying the autistic mind. On the eve of National Autism Day, Horizon reveals how Uta's lifetime study of people with autism has transformed our understanding of this mysterious condition. In this film Uta shows how people with autism perceive and interact with the world and how, for them, another kind of reality exists. She meets people with autism who have extraordinary talents, and explains why they often fail to understand jokes. She also explores whether many of us could be just a little bit autistic.
Apr 01 2014
Horizon uncovers the truth about how you really make decisions. Every day you make thousands of decisions, big and small, and behind all them is a powerful battle in your mind, pitting intuition against logic. This conflict affects every aspect of your life - from what you eat to what you believe, and especially to how you spend your money. And it turns out that the intuitive part of your mind is a lot more powerful than you may realise.
Feb 24 2014
As they contain no active ingredient, placebo medicines and pills should not really work, but they are now being shown to be effective in helping treat pain and depression and even alleviating some of the symptoms of Parkinson's disease. This programme explores why they work and how everyone could benefit from them.
Feb 17 2014
Horizon goes behind the scenes at Nasa to discover how it is preparing for its most ambitious and daring mission: to land men - and possibly women - on the surface of Mars. It's over 40 years since Neil Armstrong made the first human footprint on the moon. But getting to the red planet would involve a journey of at least three years. Horizon meets the scientists and engineers who are designing new rockets, new space suits and finding ways to help astronauts survive the perils of this long voyage. And it turns out that having the 'right stuff' for a mission to mars might not be quite what you expect.
Feb 10 2014
In February 2013, a hole opened up beneath a home in Florida, and swallowed a man. Jeff Bush was asleep when a sinkhole opened up beneath his bedroom. Despite the efforts of his brother to rescue him, Jeff was never seen again and his body was never recovered. Professor Iain Stewart travels to Florida to try and understand what killed Jeff, and why the geology of this state makes it the sinkhole capital of the world.
Feb 03 2014
Sugar v Fat 2014x01
What's worse for us: sugar or fat? To answer the hottest question in nutrition, twin doctors Chris and Xand Van Tulleken go on month long high-fat and high-sugar diets. The effects on their bodies are shocking and surprising. But they also discover that in the debate about fat and sugar, the real enemy might have been hiding in plain sight.
Jan 29 2014

Season 2013

13 Episodes

The hunt for life within the long-dead bones of dinosaurs may sound like the stuff of Hollywood fantasy - but one woman has found traces of life within the fossilised bones of a T Rex. Dr Mary Schweitzer has seen the remains of red blood cells and touched the soft tissue of an animal that died 68 million years ago. Most excitingly of all, she believes she may just have found signs of DNA. Her work is revolutionising our understanding of these iconic beasts.
Aug 26 2013
Exploring the murky and fast-paced world of the hackers out to steal money and identities and wreak havoc with people's online lives, and the scientists who are joining forces to help defeat them. Horizon meets the two men who uncovered the world's first cyber weapon, the pioneers of what is called ultra paranoid computing, and the computer expert who worked out how to hack into cash machines.
Aug 19 2013
Monitor Me 2013x11
Dr Kevin Fong explores a medical revolution that promises to help us live longer, healthier lives. Inspired by the boom in health-related apps and gadgets, it's all about novel ways we can monitor ourselves around the clock. How we exercise, how we sleep, even how we sit.
Aug 12 2013
Michael Mosley explores the latest science about how our personalities are created - and whether they can be changed. Despite appearances, Mosley is a pessimist who constantly frets about the future. He wants to worry less and become more of an optimist. He tries out two techniques to change this aspect of his personality - with surprising results. And he travels to the frontiers of genetics and neuroscience to find out about the forces that shape all our personalities.
Jul 10 2013
Professor Alice Roberts is making a new human being - she is pregnant with her second child. But before he is born, she wants to find out what makes a human, human? What is that separates us from our closest living relatives - the chimpanzees? We share 99% of our DNA with chimpanzees and yet from the moment of birth, our lives are completely different. So are we just another animal, or is there something special about being human? Before her new baby emerges into the world, Professor Roberts sets out to explore what it is about our bodies, our genes and ultimately our brains that set us apart from our furry cousins - what is it that truly makes us human?
Jul 03 2013
This summer, the black hole at the centre of the Milky Way is getting ready to feast. A gas cloud three times the size of our planet has strayed within the gravitational reach of our nearest supermassive black hole. And across the globe, telescopes are being trained on the heart of our Milky Way galaxy, some 27,000 light years from Earth, in the expectation of observing this unique cosmic spectacle. For cosmic detectives across the Earth, it is a unique opportunity. For the first time in the history of science, they hope to observe in action the awesome spectacle of a feeding supermassive black hole.
Jun 26 2013
Investigating the controversial process of mining natural gas via hydraulic fracturing.
Jun 19 2013
Looks at the cats who stood out in the experiment conducted in The Secret Life of the Cat.
Jun 14 2013
Horizon discovers what your cat really gets up to when it leaves the cat flap.
Jun 13 2013
In Los Angeles, a remarkable experiment is underway; the police are trying to predict crime, before it even happens. At the heart of the city of London, one trader believes that he has found the secret of making billions with math. In South Africa, astronomers are attempting to catalogue the entire cosmos. These very different worlds are united by one thing - an extraordinary explosion in data. Horizon meets the people at the forefront of the data revolution, and reveals the possibilities and the promise of the age of big data
Apr 04 2013
Taste is our most indulgent sense but it is only in recent years that we have started to understand why we really love the foods we do - and it is a lot more surprising than you might think. There may a way to make food taste sweeter without adding any extra sugar and it is all down to a trick that happens in your brain. Horizon meets the scientist who has grown the perfect tomato, that is sweeter and juicier than anything you are likely to find on a shelf, as well as the men and women hoping to become elite, professional tasters.
Mar 28 2013
A&E doctor Kevin Fong finds out how doctors can avoid making mistakes in the high-pressure, high-stakes world of the operating theatre. He sets out to learn how other professionals make life and death decisions under pressure, from airline pilots facing emergencies, to the Fire Service dealing with lethal blazes, to the world of Formula One pit crews. Kevin discovers how all these fields are helping to make surgery safer.
Mar 21 2013
It is a feeling we all know - the moment when a light goes on in your head. In a sudden flash of inspiration, a new idea is born. Today, scientists are using some unusual techniques to try to work out how these moments of creativity - whether big, small or life-changing - come about. They have devised a series of puzzles and brainteasers to draw out our creative behaviour, while the very latest neuroimaging technology means researchers can actually peer inside our brains and witness the creative spark as it happens. What they are discovering could have the power to make every one of us more creative.
Mar 14 2013

Season 2012

12 Episodes

Across the world we are seeing the emergence of bacteria that have gone rogue. These are the superbugs, dangerous bacteria that are becoming resistant to our only defense; antibiotics. Horizon meets the scientists who are tracking the spread of these potential killers around the globe, and discovers the new techniques researchers are developing to help defeat these superbugs.
Sep 10 2012
Horizon plunges down the biggest rabbit-hole in history in search of the smallest thing in the Universe. It is a journey where things don't just become smaller but also a whole lot weirder. Scientists hope to catch a glimpse of miniature black holes, multiple dimensions and even parallel Universes. As they start to explore this wonderland, where nothing is quite what it seems, they may have to rewrite the fundamental laws of time and space.
Sep 03 2012
Cosmologists talk about their project to create a map of everything in existence, and also reveal that their research has some highly unexpected results, creating a picture stranger than anything they had ever imagined.
Aug 27 2012
Michael Mosley has set himself a truly ambitious goal: he wants to live longer, stay younger and lose weight in the bargain. And he wants to make as few changes to his life as possible along the way. He discovers the powerful new science behind the ancient idea of fasting, and he thinks he's found a way of doing it that still allows him to enjoy his food. Michael tests out the science of fasting on himself - with life-changing results.
Aug 06 2012
Plastic surgeon Dr Rozina Ali leaves the operating theatre behind for the frontiers of skin science and asks if it is possible to make your skin look younger without surgery. She discovers the latest research about how the foods we eat can protect our skin from damage, and how a chemical found in a squid's eye is at the forefront of a new sun protection cream. She also finds out how sugar in our blood can make us look older, and explores an exciting new science called glycobiology which promises a breakthrough in making us look younger.
Jul 23 2012
Over the past year, Horizon has been behind the scenes at one of Britain's leading cancer hospitals, the Royal Marsden in London. The film follows Rosemary, Phil and Ray as they undergo remarkable new treatments - from a billion pound genetically targeted drug designed to fight a type of skin cancer, to advanced robotic surgery. We witness the breakthroughs in surgery and in scientific research that are offering new hope and helping to defeat a disease that more than one in three of us will develop at some stage of our lives.
Apr 10 2012
Something weird seems to be happening to our weather - it appears to be getting more extreme. In the past few years we have shivered through two record-breaking cold winters and parts of the country have experienced intense droughts and torrential floods. It is a pattern that appears to be playing out across the globe. Hurricane chasers are recording bigger storms and in Texas, record-breaking rain has been followed by record-breaking drought. Horizon follows the scientists who are trying to understand what's been happening to our weather and investigates if these extremes are a taste of whats to come.
Mar 27 2012
Surgeon Gabriel Weston discovers the surprising truth about why so many people are piling on the pounds, and how to fight the fat epidemic. She discovers the hidden battles of hormones that control people's appetites, and sees the latest surgery that fundamentally changes what a patient wants to eat by altering how their brains work. Gabriel is shocked to find out that when it comes to being overweight, it is not always your fault you are fat.
Mar 20 2012
We all like to think we are in control of our lives - of what we feel and what we think. But scientists are now discovering this is often simply an illusion. Surprising experiments are revealing that what you think you do and what you actually do can be very different. Your unconscious mind is often calling the shots, influencing the decisions you make, from what you eat to who you fall in love with. If you think you are really in control of your life, you may have to think again.
Mar 13 2012
Scientists are expecting a fit of violent activity on the sun which will propel billions of tonnes of superheated gas and pulses of energy towards our planet. They have the power to close down our modern technological civilization. Horizon meets the space weathermen who are trying to predict what's coming our way, and organistions like the National Grid which are preparing for the impending solar storms.
Mar 06 2012
Like many, Michael Mosley want to get fitter and healthier but can't face hours on the treadmill or trips to the gym. Help may be at hand. He uncovers the surprising new research which suggests many of us could benefit from just three minutes of high intensity exercise a week. He discovers the hidden power of simple activities like walking and fidgeting, and finds out why some of us don't respond to exercise at all Using himself as a guinea pig, Michael uncovers the surprising new research about exercise, that has the power to make us all live longer and healthier lives.
Feb 28 2012
Playing God 2012x01
Adam Rutherford meets a new creature created by American scientists, the spider-goat. It is part goat, part spider, and its milk can be used to create artificial spider's web. It is part of a new field of research, synthetic biology, with a radical aim: to break down nature into spare parts so that we can rebuild it however we please. This technology is already being used to make bio-diesel to power cars. Other researchers are looking at how we might, one day, control human emotions by sending 'biological machines' into our brains.
Jan 17 2012

Season 2011

14 Episodes

Six months after the explosions at the Fukushima nuclear plant and the release of radiation there, Professor Jim Al-Khalili sets out to discover whether nuclear power is safe. He begins in Japan, where he meets some of the tens of thousands of people who have been evacuated from the exclusion zone. He travels to an abandoned village just outside the zone to witness a nuclear clean-up operation. Jim draws on the latest scientific findings from Japan and from the previous explosion at Chernobyl to understand how dangerous the release of radiation is likely to be and what that means for our trust in nuclear power.
Sep 14 2011
What makes us good or evil? It's a simple but deeply unsettling question. One that scientists are now starting to answer. Horizon meets the researchers who have studied some of the most terrifying people behind bars - psychopathic killers. But there was a shock in store for one of these scientists, Professor Jim Fallon, when he discovered that he had the profile of a psychopath. And the reason he didn't turn out to be a killer holds important lessons for all of us. We meet the scientist who believes he has found the moral molecule and the man who is using this new understanding to rewrite our ideas of crime and punishment.
Sep 07 2011
The Core 2011x12
For centuries we have dreamt of reaching the centre of the Earth. Now scientists are uncovering a bizarre and alien world that lies 4,000 miles beneath our feet, unlike anything we know on the surface. It is a planet buried within the planet we know, where storms rage within a sea of white-hot metal and a giant forest of crystals make up a metal core the size of the Moon. Horizon follows scientists who are conducting experiments to recreate this core within their own laboratories, with surprising results.
Aug 31 2011
Horizon explores the secrets of what makes a long, healthy and happy life. It turns out that a time you can't remember - the nine months you spend in the womb - could have more lasting effects on you today than your lifestyle or genes. It is one of the most powerful and provocative new ideas in human science, and it was pioneered by a British scientist, Professor David Barker. His theory has inspired a field of study that is revealing how our time in the womb could affect your health, personality, and even the lives of your children.
Aug 22 2011
Seeing Stars 2011x10
Around the world, a new generation of astronomers are hunting for the most mysterious objects in the universe. Young stars, black holes, even other forms of life. They have created a dazzling new set of super-telescopes that promise to rewrite the story of the heavens. This film follows the men and women who are pushing the limits of science and engineering in some of the most extreme environments on earth. But most striking of all, no-one really knows what they will find out there.
Aug 15 2011
Documentary exploring the impact of colours on people's lives, and how perceptions of them can be influenced by age, gender and mood. The programme examines scientists' claims that different hues have hidden powers, from the winning properties of red to how blue seemingly makes time speed up.
Aug 08 2011
Across the world scientists are releasing predators, nature's ultimate killers, close to where people live. In Florida, a new population of panthers, feared as ambush predators, have been released near to the busy town of Naples. In the Italian Alps, bears have been reintroduced after they became virtually extinct, and now try to get into people's homes in the middle of the night. And in Yellowstone National Park, wolves have been brought back 70 years after they were exterminated. Horizon meets the scientist behind this radical scheme, and the people who now have to share their backyards with these predators.
Mar 08 2011
Dr Alice Roberts asks one of the great questions about our species: are we still evolving? There's no doubt that we're a product of millions of years of evolution. But thanks to modern technology and medicine, did we escape Darwin's law of the survival of the fittest? Alice follows a trail of clues from ancient human bones, to studies of remarkable people living in the most inhospitable parts of the planet, to the frontiers of genetic research to discover if we are still evolving - and where we might be heading.
Mar 01 2011
Dr Kevin Fong finds out how close scientists are to being able to mend your heart if it stops working. He meets some of the people who have undergone pioneering heart operations and the scientists who are pushing the limits of cardiac treatment. We meet a man who has had his heart replaced with an artificial one powered by a mechanical pump he carries around in a rucksack, and witness a scientist bring a dead animal heart back to life on a workbench. Plus, the work of an American scientist who is using stem cells to turn what she calls a 'ghost heart' - the scaffold of a heart - into a replacement heart for humans.
Feb 14 2011
Horizon meets the scientists working to make fatal car crashes a thing of the past. A remarkable fusion of mechanical engineering and biology promises to save countless lives across the world. The programme has exclusive access to the secretive world of the most advanced car crash tests. Horizon reveals how the latest advances in trauma medicine, psychology and even extreme sport are transforming your chances of surviving on the roads. And the programme shows how researchers are creating a new virtual crash test dummy that could change how our cars are designed forever.
Feb 07 2011
Horizon reveals the latest research into one of the most mysterious and common human experiences - pain. Breakthroughs have come from studying a remarkable woman in London who has felt no pain at all in her life, a man in the US who cut off his own arm to survive, and three generations of an Italian family who don't feel extremes of temperature. We witness a new treatment that involves a pioneering computer game 'snow world' that contains the power to banish pain. And we find how powerfully our moods and emotions shape what pain we feel.
Jan 31 2011
Nobel Prize winner Sir Paul Nurse examines why science appears to be under attack, and why public trust in key scientific theories has been eroded - from the theory that man-made climate change is warming our planet, to the safety of GM food, or that HIV causes AIDS. He interviews scientists and campaigners from both sides of the climate change debate, and travels to New York to meet Tony, who has HIV but doesn't believe that that the virus is responsible for AIDS. This is a passionate defence of the importance of scientific evidence and the power of experiment, and a look at what scientists themselves need to do to earn trust in controversial areas of science in the 21st century.
Jan 24 2011
There is a strange and mysterious world that surrounds us, a world largely hidden from our senses. The quest to explain the true nature of reality is one of the great scientific detective stories. Clues have been pieced together from deep within the atom, from the event horizon of black holes, and from the far reaches of the cosmos. It may be that that we are part of a cosmic hologram, projected from the edge of the universe. Or that we exist in an infinity of parallel worlds. Your reality may never look quite the same again.
Jan 17 2011
Comedian Ben Miller returns to his roots as a physicist to try to answer a deceptively simple question: what is one degree of temperature? His quest takes him to the frontiers of current science as he meets researchers working on the hottest and coldest temperatures in the universe, and to a lab where he experiences some of the strangest effects of quantum physics - a place where super-cooled liquids simply pass through solid glass. Plus, Ben installs his very own Met office weather station at home. Ben's investigations in this personal and passionate film highlight the importance of measurement and accuracy in the 21st century.
Jan 10 2011

Season 2010

15 Episodes

Horizon reveals the untold story of the 87-day battle to kill the Deepwater Horizon oil blowout a mile beneath the waves - a crisis that became America's worst environmental disaster. Engineers and oil men at the heart of the operation talk for the first time about the colossal engineering challenges they faced and how they had to improvise under extreme pressure. They tell of how they used household junk, discarded steel boxes and giant underwater cutting shears to stop the oil. It's an operation that one insider likens to the rescue of Apollo 13.
Nov 16 2010
Famed for their ability to inflict Armageddon from outer space, asteroids are now revealing the secrets of how they are responsible for both life and death on our planet.
Nov 03 2010
A decade ago, scientists announced that they had produced the first draft of the human genome, the 3.6 billion letters of our genetic code. It was seen as one of the greatest scientific achievements of our age, a breakthrough that would usher in a new age of medicine. A decade later, Horizon finds out how close we are to developing the life-changing treatments that were hoped for.
Oct 25 2010
Horizon explores the strange and wonderful world of illusions - and reveals the tricks they play on our senses and why they fool us. We show how easy it is to trick your sense of taste by changing the colours of food and drink, explain how what you see can change what you hear, and see just how unreliable our sense of colour can be. But all this trickery has a serious purpose. It's helping scientists to create a new understanding of how our senses work - not as individual senses, but connected together.
Oct 18 2010
They are the biggest questions that science can possibly ask: where did everything in our universe come from? How did it all begin? For nearly a hundred years, we thought we had the answer: a big bang some 14 billion years ago. But now some scientists believe that was not really the beginning. Our universe may have had a life before this violent moment of creation. Horizon takes the ultimate trip into the unknown, to explore a dizzying world of cosmic bounces, rips and multiple universes, and finds out what happened before the big bang.
Oct 11 2010
Sir David Attenborough reveals the findings of one of the most ambitious scientific studies of our time - an investigation into what is happening to our oceans. He looks at whether it is too late to save their remarkable biodiversity. Horizon travels from the cold waters of the North Atlantic to the tropical waters of the Great Barrier Reef to meet the scientists who are transforming our understanding of this unique habitat. Attenborough explores some of the ways in which we are affecting marine life - from over-fishing to the acidification of sea water. The film also uncovers the disturbing story of how shipping noise is deafening whales and dolphins, affecting their survival in the future.
Oct 04 2010
Dr Kevin Fong investigates a technique that is used to bring people back from the dead.
Sep 27 2010
There's something very odd going on in space - something that shouldn't be possible. It is as though vast swathes of the universe are being hoovered up by a vast and unseen celestial vacuum cleaner. Sasha Kaslinsky, the scientist who discovered the phenomenon, is understandably nervous: 'It left us quite unsettled and jittery' he says, 'because this is not something we planned to find'. The accidental discovery of what is ominously being called 'dark flow' not only has implications for the destinies of large numbers of galaxies - it also means that large numbers of scientists might have to find a new way of understanding the universe. Dark flow is the latest in a long line of phenomena that have threatened to rewrite the textbooks. Does it herald a new era of understanding, or does it simply mean that everything we know about the universe is wrong?
Mar 09 2010
Horizon examines the evidence that our ancestors' changing diet and mastery of fire prompted anatomical and neurological changes that took us out of the trees and into the kitchen.
Mar 02 2010
Could you have come up with Einstein's theory of relativity? If not - why not? This is what Marcus du Sautoy, professor of mathematics, wants to explore. Marcus readily admits that he is no genius, but wants to know if geniuses are just an extreme version of himself - or whether their brains are fundamentally different. Marcus meets some remarkable individuals - Tommy, an obsessive artist who uses his whole house as his canvas; Derek: blind, autistic, and a pianist with apparently prodigious gifts; Claire who is also blind, but whose brain has learnt to see using sound. Marcus is shown how babies have remarkable abilities which most of us lose as teenagers. He meets a neuroscientist who claims he has evidence of innate ability, a scientist who's identified a gene for learning, and Dr. Paulus, who has discovered how to sharpen the brain... by electrically turbo-charging it.
Feb 17 2010
By our third year, most of us will have learned to count. Once we know how, it seems as if there would be nothing to stop us counting forever. But, while infinity might seem like an perfectly innocent idea, keep counting and you enter a paradoxical world where nothing is as it seems. Mathematicians have discovered there are infinitely many infinities, each one infinitely bigger than the last. And if the universe goes on forever, the consequences are even more bizarre. In an infinite universe, there are infinitely many copies of the Earth and infinitely many copies of you. Older than time, bigger than the universe and stranger than fiction. This is the story of infinity.
Feb 10 2010
For centuries scientists have been attempting to come up with an elixir of youth. Now remarkable discoveries are suggesting that ageing is something flexible that can ultimately be manipulated. Horizon meets the scientists who are attempting to piece together why we age and more vitally for all of us, what we can do to prevent it. But which theory will prevail? Does the 95-year-old woman who smokes two packets of cigarettes a day hold the clue? Do blueberries really delay signs of ageing or is it more a question of attitude? Does the real key to controlling how we age lie with a five-year-old boy with an extraordinary ageing disease or with a self-experimenting Harvard professor? Could one of these breakthroughs really see our lives extend past 120 years?
Feb 03 2010
Pill Poppers 2010x03
Over a person's lifetime they are likely to be prescribed more than 14,000 pills. Antibiotics, cholesterol lowering tablets, anti-depressants, painkillers, even tablets to extend youth and improve performance in bed. These drugs perform minor miracles day after day, but how much is really known about them? Drug discovery often owes as much to serendipity as to science, and that means much is learnt about how medicines work, or even what they do, when they're taken. By investigating some of the most popular pills people pop, Horizon asks, how much can they be trusted to do what they are supposed to?
Jan 20 2010
Just months ago, the world stood in fear of an emerging new disease that threatened to kill millions. A new flu variant H1N1 had arrived. In the UK alone, 65,000 deaths were predicted. Yet to date, these dire warnings have not materialised. If this latest pandemic has taught anything, it is just how little is understood about the invisible world of viruses. But that has not stopped scientists trying. Horizon follows the leading researchers from across the world, who are attempting to unravel the many secrets of viruses to understand when and why they kill.
Jan 13 2010
We have an extraordinary relationship with dogs - closer than with any other animal on the planet. But what makes the bond between us so special? Research into dogs is gaining momentum, and scientists are investigating them like never before. From the latest fossil evidence, to the sequencing of the canine genome, to cognitive experiments, dogs are fast turning into the new chimps as a window into understanding ourselves. Where does this relationship come from? In Siberia, a unique breeding experiment reveals the astonishing secret of how dogs evolved from wolves. Swedish scientists demonstrate how the human/dog bond is controlled by a powerful hormone also responsible for bonding mothers to their babies. Why are dogs so good at reading our emotions? Horizon meets Betsy, the world's most intelligent dog, and compares her incredible abilities to those of children. Man's best friend has recently gone one step further - helping us identify genes responsible for causing human diseases.
Jan 06 2010

Season 2009

17 Episodes

Alan Davies attempts to answer the proverbial question: how long is a piece of string? But what appears to be a simple task soon turns into a mind-bending voyage of discovery where nothing is as it seems. An encounter with leading mathematician Marcus du Sautoy reveals that Alan's short length of string may in fact be infinitely long. When Alan attempts to measure his string at the atomic scale, events take an even stranger turn. Not only do objects appear in many places at once, but reality itself seems to be an illusion. Ultimately, Alan finds that measuring his piece of string could - in theory at least - create a black hole, bringing about the end of the world.
Nov 17 2009
Talking is something that is unique to humans, yet it still remains a mystery. Horizon meets the scientists beginning to unlock the secrets of speech - including a father who is filming every second of his son's first three years in order to discover how we learn to talk, the autistic savant who can speak more than 20 languages, and the first scientist to identify a gene that makes speech possible. Horizon also hears from the godfather of linguistics, Noam Chomsky, the first to suggest that our ability to talk is innate. A unique experiment shows how a new alien language can emerge in just one afternoon, in a bid to understand where language comes from and why it is the way it is.
Nov 10 2009
Black holes are one of the most destructive forces in the universe, capable of tearing a planet apart and swallowing an entire star. Yet scientists now believe they could hold the key to answering the ultimate question - what was there before the Big Bang? The trouble is that researching them is next to impossible. Black holes are by definition invisible and there's no scientific theory able to explain them. Despite these obvious obstacles, Horizon meets the astronomers attempting to image a black hole for the very first time and the theoretical physicists getting ever closer to unlocking their mysteries. It's a story that takes us into the heart of a black hole and to the very edge of what we think we know about the universe.
Nov 03 2009
Fix Me 2009x14
Horizon follows the emotional journey of three young people with currently untreatable conditions to see if, within their lifetime, they can be cured. Sophie Morgan is determined not to spend the rest of her life in a wheelchair. She is tempted by the online claims of unregulated private clinics promising a cure using stem cells. To help her decide if she should go for treatment, she meets another paraplegic, Chris Oberle, who spent his life savings visiting an Indian clinic. She also visits Geron, the Californian clinic set to hold the first human trials using embryonic stem cells. A lot rests on the trial; if successful, it could mean treatment much sooner for Sophie and lead to cures for a range of untreatable conditions. Anthony Bath was just 20 when his right leg was amputated. A botched pinning procedure led to an MRSA infection and, after 18 operations, the loss of his leg. Although he has continued to achieve great things on the sporting front, running marathons and sailing around the world, he would still love to have his leg back. In Finland, Anthony witnesses one of the world's first operations in which stem cells are used to replace bone. If the procedure had been available a few years ago, his leg could have been saved. When Dean Third collapsed, he was diagnosed with dilated cardiomyopathy, a condition in which his damaged heart could cause his death at any moment. His condition is stabilised by medication, but each of his children carries a 50 per cent chance of developing symptoms, too. Desperate for a cure, he visits Dr Anthony Mathur from University College London in his operating theatre to witness the world's first trial using stem cells taken from bone marrow. They are then injected directly into the muscles of the heart with the aim of regenerating the damaged heart cells. For Sophie, Anthony and Dean, this pioneering research could mean the difference between the life they are forced to lead and the life they dream of. Throughout the film, they reflect on what these discoveries could mean for them, and whether they really believe that, in the future, stem cells could heal them.
Oct 27 2009
With the help of a hammer-wielding scientist, Jennifer Aniston and a general anaesthetic, Professor Marcus du Sautoy goes in search of answers to one of science's greatest mysteries: how do we know who we are? While the thoughts that make us feel as though we know ourselves are easy to experience, they are notoriously difficult to explain. So, in order to find out where they come from, Marcus subjects himself to a series of probing experiments. He learns at what age our self-awareness emerges and whether other species share this trait. Next, he has his mind scrambled by a cutting-edge experiment in anaesthesia. Having survived that ordeal, Marcus is given an out-of-body experience in a bid to locate his true self. And in Hollywood, he learns how celebrities are helping scientists understand the microscopic activities of our brain. Finally, he takes part in a mind-reading experiment that both helps explain and radically alters his understanding of who he is.
Oct 20 2009
Do I Drink Too Much? Alcohol is by far the most widely used drug - and a dangerous one at that. So why are so many of us drinking over the recommended limits? Why does alcohol have such a powerful grip on us? How much of our relationship with this drug is written in our genes? What are the real dangers of our children drinking too young? Addiction expert John Marsden, who likes a drink, makes a professional and personal exploration of our relationship with alcohol. He undergoes physical and neurological examinations to determine its impact, and finds out why some people will find it much harder than others to resist alcohol. Even at the age of 14 there may be a way of determining which healthy children will turn into addicts. John experiments with a designer drug being developed that hopes to replicate all the benefits of alcohol without the dangers. Could this drug replace alcohol in the future?
Oct 13 2009
What makes ordinary people commit extreme acts of violence? Michael Portillo investigates the dark side of human nature, and discovers what it is like to inflict pain.
May 12 2009
Ever since he was at school, actor and comedian Alan Davies has hated maths. And like many people, he is not much good at it either. But Alan has always had a sneaking suspicion that he was missing out. So, with the help of top mathematician Professor Marcus du Sautoy, Alan is going to embark on a maths odyssey. Together they visit the fourth dimension, cross the universe and explore the concept of infinity. Along the way, Alan does battle with some of the toughest maths questions of our age. But did his abilities peak 25 years ago when he got his grade C O-Level? Or will Alan be able to master the most complex maths concept there is?
Mar 31 2009
Last century, earthquakes killed over one million, and it is predicted that this century might see ten times as many deaths. Yet when an earthquake strikes, it always takes people by surprise. So why hasn't science worked out how to predict when and where the next big quake is going to happen? This is the story of the men and women who chase earthquakes and try to understand this mysterious force of nature. Journeying to China's Sichuan Province, which still lies devastated by the earthquake that struck in May 2008, as well as the notorious San Andreas Fault in California, Horizon asks why science has so far fallen short of answering this fundamental question.
Mar 24 2009
David Baddiel, father of two, sets out to answer one of the greatest questions a parent can ask: how best to educate your child. Taking in the latest scientific research, David uncovers some unconventional approaches: from the parent hot-hosing his child to record-breaking feats of maths, to a school that pays hard cash for good grades. David witnesses a ground-breaking experiment that suggests a child's destiny can be predicted at four, and hears the three little words that can ruin a child's chance of success for good. He also uncovers the neurological basis for why teenagers can be stroppy and explosive and has his own brain tinkered with to experience what it is like to struggle at school. Through it all, David's quest remains true: to maximise his child's potential for success and happiness.
Mar 17 2009
When disaster strikes who lives and who dies is not purely a matter of luck. In every disaster, from those people face once in a lifetime, to those they face every day, there are things that can be done to increase the chances of getting out alive. Horizon has gathered a team of leading experts to produce the ultimate guide to disaster survival. Through controversial experiments, computer simulations and analysis of hundreds of survivor testimonies from plane crashes to ferry disasters and even 9/11, they will reveal what happens in the mind in the moment of crisis and how the human brain can be programmed for survival.
Mar 10 2009
What is wrong with nudity? Why are people embarrassed about their bodies? How and why did they get the way they are? Horizon takes a group of volunteers and subjects them to a series of psychological and physical tests to challenge attitudes to the naked human form. The questions raised strike at the heart of human physical and social evolution. Human beings are the only creatures that can be 'naked' - but why, how and when did people lose their fur? That question takes Horizon around the world to meet scientists from Africa to Florida, and they are finding answers in unexpected places: the chest hair of Finnish students, the genetic history of lice, and the sweat of an unusual monkey. It turns out that something everyone takes for granted may hold the key to the success of the entire human species.
Mar 03 2009
Why are you more likely to have a heart attack at eight o'clock in the morning or crash your car on the motorway at two o'clock in the afternoon? Can taking your medication at the right time of day really save your life? And have you ever wondered why teenagers will not get out of bed in the morning? The answers to these questions lie in the secret world of the biological clock.
Feb 24 2009
Professor Brian Cox takes a global journey in search of the energy source of the future. Called nuclear fusion, it is the process that fuels the sun and every other star in the universe. Yet despite over five decades of effort, scientists have been unable to get even a single watt of fusion electricity onto the grid. Brian returns to Horizon to find out why. Granted extraordinary access to the biggest and most ambitious fusion experiments on the planet, Brian travels to the USA to see a high security fusion bomb testing facility in action and is given a tour of the world's most powerful laser. In South Korea, he clambers inside the reaction chamber of K-Star, the world's first super-cooled, super-conducting fusion reactor where the fate of future fusion research will be decided.
Feb 17 2009
Horizon uncovers the secret world of our dreams. In a series of cutting-edge experiments and personal stories, we go in search of the science behind this most enduring mystery and ask: where do dreams come from? Do they have meaning? And ultimately, why do we dream? What the film reveals is that much of what we thought we knew no longer stands true. Dreams are not simply wild imaginings but play a significant part in all our lives as they have an impact on our memories, the ability to learn, and our mental health. Most surprisingly, we find nightmares, too, are beneficial and may even explain the survival of our species.
Feb 10 2009
Cannabis is the world's favourite drug, but also one of the least understood. Can cannabis cause schizophrenia? Is it addictive? Can it lead you on to harder drugs? Or is it simply a herb, an undervalued medicine? Addiction specialist Dr John Marsden discovers that modern science is finally beginning to find answers to these questions. John traces the cannabis plants' birthplace in Kazakhstan; finds the origins of our sensitivity to cannabis in the simple sea squirt; and finds out just what it does to our brains. He meets people who have been changed by this drug in drastically different ways - from those whose lives have been shattered to those who lives have been revived.
Feb 03 2009
The world is affected by an obesity epidemic, but why is it that not everyone is succumbing? Medical science has been obsessed with this subject and is coming up with some unexpected answers. As it turns out, it is not all about exercise and diet. At the centre of this programme is a controversial overeating experiment that aims to identify exactly what it is about some people that makes it hard for them to bulk up.
Jan 26 2009

Season 2008

17 Episodes

Danny Wallace really wants a robot. He wants it to walk like him and talk like him. It's what scientists have been promising us for generations but it's a promise so far unfulfilled. Danny circumnavigates the globe searching for robot nirvana, trying to uncover how far away his dream is. He discovers that the robotics world is as weird as it is insanely complicated. During his quest he meets a Japanese man who makes copies of himself and his daughter, an Italian who claims he's found the key to human intelligence in a video game and a Singaporean whose unpromising-looking homage to Dusty Bin might just turn out to be the robot of Danny's dreams.
Dec 16 2008
We are in the grip of an allergy epidemic. Fifty years ago one in 30 were affected, but in Britain today it is closer to one in three. Why this should be is one of modern medicine's greatest puzzles. In search of answers, Horizon travels round the globe, from the remotest inhabited island to the polluted centres of California and the UK. We meet sufferers and the scientists who have dedicated their lives trying to answer the mystery of why we are becoming allergic to our world.
Dec 09 2008
Particle physicist Professor Brian Cox asks, 'What time is it?' It's a simple question and it sounds like it has a simple answer. But do we really know what it is that we're asking? Brian visits the ancient Mayan pyramids in Mexico where the Maya built temples to time. He finds out that a day is never 24 hours and meets Earth's very own Director of Time. He journeys to the beginning of time, and goes beyond within the realms of string theory, and explores the very limit of time. He discovers that we not only travel through time at the speed of light, but the experience we feel as the passing of time could be an illusion.
Dec 02 2008
Jimmy Doherty, pig farmer, one-time scientist and poster-boy for sustainable food production is on a mission to find out if GM crops really can feed the world. We need to double the amount of food we produce in the next fifty years to feed the world's growing population. Are GM crops the answer? Or are they a dangerous Frankenstein technology that could start an environmental catastrophe? To find the answers Jimmy is on a journey that will take him from the vast soya plantations of Argentina to the traditional Amish farms of Pennsylvania; and from the cutting-edge technology of the GM laboratories to the banana plantations of Uganda.
Nov 25 2008
Second part of the special documentary considering where the line between sanity and madness lies as ten volunteers come together for an extraordinary test. With five 'normal' volunteers and five who have been officially diagnosed as mentally ill, Horizon asks if you can tell who is who.
Nov 18 2008
First of a two-part special. Ten volunteers have come together for an extraordinary test. Five are 'normal' and the other five have been officially diagnosed as mentally ill. Horizon asks if you can tell who is who, and considers where the line between sanity and madness lies.
Nov 11 2008
Horizon asks some of the biggest names in science to have a quiet word with the new American president. The United States president is quite simply the most powerful man on earth, but past presidents have often known little about science. That is a problem when the decisions they make will affect every one of us, from nuclear proliferation to climate change. To help the new president get to grips with this intimidating responsibility, some of the world's leading scientists, from Dawkins to Watson, share some crucial words of advice.
Sep 16 2008
Horizon journeys into the human memory, from how it emerges in childhood, develops through to adulthood, and fades in middle age. You might think that your memory is there to help you remember facts, such as birthdays or shopping lists. If so, you would be very wrong. The ability to travel back in time in your mind is, perhaps, your most remarkable ability, and develops over your lifespan. Horizon takes viewers on an extraordinary journey into the human memory. From the woman who is having her most traumatic memories wiped by a pill, to the man with no memory, this film reveals how these remarkable human stories are transforming our understanding of this unique human ability. The findings reveal the startling truth that everyone is little more than their own memory.
Mar 25 2008
Horizon investigates the medical revolution that has created an almost insatiable demand for body parts . When veteran broadcaster Alistair Cooke died in 2004 few suspected that he was yet to uncover his greatest story. What happened to his body as it lay in a funeral home would reveal a story of modern day grave robbery and helped smash a body-snatching ring that had made millions of dollars by chopping up and selling-off over 1000 bodies. Dead bodies have become big business. Each year millions of people's lives are improved by the use of tissue from the dead. Bodies are used to supply spare parts, and for surgeons to practice on. Horizon investigates the medical revolution that has created an almost insatiable demand for body parts and uncovers the growing industry and grisly black market that supplies human bodies for a price.
Mar 18 2008
Use the Drake equation to calculate the number of civilisations in our galaxy. For fifty years, the Search for Extra Terrestrial Intelligence has been scanning the galaxy for a message from an alien civilisation. So far to no avail, but a recent breakthrough suggests they may one day succeed. Horizon joins the planet hunters who've discovered a new world called Gliese 581 c. It is the most Earth-like planet yet found around another star and may have habitats capable of supporting life. NASA too hopes to find fifty more Earth-like planets by the end of the decade, all of which dramatically increases the chance that alien life has begun elsewhere in the galaxy.
Mar 04 2008
Friendly bacteria, superfoods, cholesterol busting spreads, 99% germ free, whiter than white...it's almost impossible to find a product in the supermarket today that doesn't come with impressive claims...a scientific claims, but do they actually do what they say? Are they worth the price? Are they worth a place in Prof. Regan's shopping trolly?
Feb 26 2008
While scientists have been searching for the secrets of long life, a few isolated communities have stumbled across the answer. The quest to live longer has been one of humanities oldest dreams, but while scientists have been searching, a few isolated communities have stumbled across the answer. On the remote Japanese island of Okinawa, In the Californian town of Loma Linda and in the mountains of Sardinia people live longer than anywhere else on earth. In these unique communities a group of scientists have dedicated their lives to trying to uncover their secrets. Horizon takes a trip around the globe to meet the people who can show us all how to live longer, healthier lives.
Feb 19 2008
Lifting the lid on the business of human choices in an exclusive guide to making better decisions. We are bad at making decisions. According to science, our decisions are based on oversimplification, laziness and prejudice. And that's assuming that we haven't already been hijacked by our surroundings or led astray by our subconscious! Featuring exclusive footage of experiments that show how our choices can be confounded by temperature, warped by post-rationalisation and even manipulated by the future, Horizon presents a guide to better decision making, and introduces you to Mathematician Garth Sundem, who is convinced that conclusions can best be reached using simple maths and a pencil!
Feb 12 2008
A trip through the highs and lows of the UK’s 20 most dangerous drugs. Recent research has analysed the link between the harmful effects of drugs relative to their current classification by law with some startling conclusions. Perhaps most startling of all is that alcohol, solvents and tobacco (all unclassified drugs) are rated more dangerous than ecstasy, 4-MTA and LSD (all class A drugs). If the current ABC system is retained, alcohol would be rated a class A drug and tobacco class B. The scientists involved, including members of the government's top advisory committee on drug classification, have produced a rigorous assessment of the social and individual harm caused by 20 of the UK's most dangerous drugs and believe this should form the basis of future ranking. They think the current ABC system is arbitrary and not based on any scientific evidence. The drug policies have remained unchanged over the last 40 years so should they be reformed in the light of new research?
Feb 05 2008
Dr Brian Cox wants to know why the Universe is built the way it is. Particle physicist and ex D:Ream keyboard player Dr Brian Cox wants to know why the Universe is built the way it is. He believes the answers lie in the force of gravity. But Newton thought gravity was powered by God, and even Einstein failed to completely solve it. Heading out with his film crew on a road trip across the USA, Brian fires lasers at the moon in Texas, goes mad in the desert in Arizona, encounters the bending of space and time at a maximum security military base, tries to detect ripples in our reality in the swamps of Louisiana and searches for hidden dimensions just outside Chicago.
Jan 29 2008
Psychologists subject six volunteers to a world without stimulation. For the first time in 40 years Horizon re-creates a controversial sensory deprivation experiment. Six ordinary people are taken to a nuclear bunker and left alone for 48 hours. Three subjects are left alone in dark, sound-proofed rooms, while the other three are given goggles and foam cuffs, while white noise is piped into their ears. The original experiments carried out in the 1950s and 60s by leading psychologist Prof Donald Hebb, was thought by many in the North American political and scientific establishment to be too cruel and were discontinued. Prof Ian Robbins, head of trauma psychology at St George's Hospital, Tooting, has been treating some of the British Guantanamo detainees and the victims of torture who come to the UK from across the world. Now he evaluates the volunteers as their brains undergo strange alterations.
Jan 22 2008
Michael Portillo looks at the science behind executions. Former Conservative MP, Michael Portillo pushes his body to the brink of death in an investigation into the science of execution. As the American Supreme Court examines whether the lethal injection is causing prisoners to die in unnecessary pain Michael sets out to find a solution which is fundamentally humane. To do so he examines the key methods of execution available today: he discovers why convicts can catch on fire in the electric chair, learns how easy it is to botch a hanging and inhales a noxious gas to experience first hand the terror of the gas chamber. Armed with some startling evidence Michael considers a completely new approach. Will it be the answer? There is only one way of finding out - to experience it himself.
Jan 15 2008

Season 2007

9 Episodes

Is it possible to use a knowledge of forensic science, not to catch a killer, but to commit a perfect murder? Modern forensic science should make it impossible to commit murder and get away with it. But how easy would it be to outfox the detectives? With the help of top forensic scientists, and real-life murder investigations, we explore whether it's possible to commit a perfect murder. The body is the most important piece of evidence in any murder. Pathologist Dr Richard Shepherd reveals the crucial clues that give away the secrets of a suspicious death. Dr Lee Goff can work out a time of death from just a few maggots on a corpse. To really understand the way a human decomposes he relies on experiments - and dead pigs make ideal human models. And what is the perfect murder weapon? Probably Agatha Christie's favourite - poison. It leaves no marks on the body, and the victim may not even realise what has happened until it's too late. But there still might not be a perfect murder. The world's most notorious poisoner - Harold Shipman - was eventually caught.
May 08 2007
Will the Large Hadron Collider finally reveal the elusive God particle? In the coming months the most complex scientific instrument ever built will be switched on. The Large Hadron Collider promises to recreate the conditions right after the Big Bang. By revisiting the beginning of time, scientists hope to unravel some of the deepest secrets of our Universe. Within these first few moments the building blocks of the Universe were created. The search for these fundamental particles has occupied scientists for decades but there remains one particle that has stubbornly refused to appear in any experiment. The Higgs Boson is so crucial to our understanding of the Universe that it has been dubbed the God particle. It explains how fundamental particles acquire mass, or as one scientist plainly states: "It is what makes stuff stuff..."
May 01 2007
Could Professor Jose Torero's fire protection system have saved the Twin Towers? When a fire gets out of control in a skyscraper it tests fire fighters to their limits. Predicting how a fire is behaving high up in a building is almost impossible. The fire fighters who entered the Twin Towers on 11 September 2001 could only guess at what was happening almost 1000 feet above them. That fateful day brought about the death of 343 New York fire fighters. Jose Torero believes fire fighters need not be put in such danger and that new technology could have saved many of the 343 fire fighters who died doing their duty that day. He believes he could even have saved the Twin Towers. He has spent the last ten years developing a system that could change the way fires are fought forever. It's called Firegrid. It's a revolutionary approach to fire fighting that could save thousands of lives, giving man the upper hand on one of his oldest enemies.
Apr 24 2007
Seven high-flyers are put through a series of tests to measure their intelligence Can you think of 100 different uses for a sock? How would you cope with glasses that turn everything upside down? What's your emotional intelligence? Can you create a work of art in ten minutes? Horizon takes seven people who are some of the highest flyers in their field - a musical prodigy, a quantum physicist, an artist, a dramatist, an RAF fighter pilot, a chess grandmaster and a Wall Street trader. Each is put through a series of tests to discover who is the most intelligent? The principle way that we measure intelligence, the IQ test, remains popular and convenient. Yet most psychologists agree that it only tells half the story... at most. Where they disagree is how to measure intelligence, for the simple reason that the experts still don't know exactly what it is.
Apr 17 2007
After 40 years man is going back to the Moon. But this time astronauts plan to stay there. After 40 years, man is preparing to return to the Moon. But this time the astronauts won't just land on the Moon - they plan to stay. From his office in Nevada, Dennis Hope has spawned a multi-million dollar business selling lunar real estate. But scientists believe the real prize is trapped in the Moon's rocks. It contains large deposits of an extremely rare gas called Helium-3. Could Helium-3 be mined and used as a new source of almost inexhaustible, clean and pollution-free energy on Earth? Whoever succeeds in transporting Helium-3 back to Earth could solve the world's energy crisis. Who will win what has been dubbed the second Moon race? And should we be exploiting the Moon's valuable resources at all?
Apr 10 2007
Mad but Glad 2007x04
Pianist Nick van Bloss has Tourette's syndrome. Is his illness a blessing or a curse? Is there really such a thing as the mad genius? Can an illness be both a blessing and a curse? At seven years old, Nick van Bloss started shaking his head, grinding his teeth and making wild whooping noises. Nick had Tourette's syndrome. No medical intervention helped him. But one activity stopped it all... The moment Nick placed his hands on the piano keys his symptoms vanished. By the age of 20, he was an award winning international pianist. He felt sure that his illness had made him the success he was. But there is a catch. The brain state necessary for his genius can also be dangerously close to mental chaos. Nick's personal journey reveals how close he came to the edge and how determined he is to triumph.
Apr 03 2007
Professor Lesley Regan is on a mission to fill her bathroom cabinet with cosmetics that actually work. Professor Lesley Regan, one of the UK's most well-respected (and glamorous) medical experts, turns her scientific eye on the world of cosmetics. She's just turned 50, and is out to create an experimentally proven beauty cabinet. Unafraid to examine the wrinkles, age spots and broken veins on her own face, Professor Regan explores just what makes us look old, and if we can slow down the ageing process. The extraordinary world of cosmetic testing is revealed, from the British hair lab which makes New York tap water, to the volunteers sun-bathing for science. Sun damage, cellulite and balding all face Professor Regan's scrutiny as she discovers which cosmetics do - and don't - have the scientific evidence to back up their claims.
Mar 27 2007
How do you save an endangered species? Get the animals in the mood for love. Thomas Hildebrandt possesses one of the world's most extraordinary jobs - getting the planet's endangered animals in the mood for love. The planet's creatures are facing the biggest mass extinction since the dinosaurs were wiped out. Species are currently disappearing at up to 10,000 times the natural rate. Coming to the rescue are men like Dr Hildebrandt and his team. They are world leaders in the art of animal manipulation. The billions of pounds spent benefiting human reproduction are now being applied to save endangered species. Techniques such as artificial insemination and IVF have been crucial to the successes in breeding giant pandas, big cats and other mammals in zoos across the world. As Thomas Hildebrandt says "Man has created this annihilation of species. It's up to man to use his ingenuity to save them."
Mar 20 2007
What if dinosaurs were still alive today? Would we hunt them, farm them - or even keep them as pets? It's a palaeontologist's dream: the chance to live in a world where dinosaurs are not something to be dug out of the ground but are living among us. It may sound far-fetched but dinosaurs were actually rather unlucky. The meteorite impact that doomed them to extinction was an event with a probability of millions to one. What if the meteorite had missed? Had dinosaurs survived, the world today would be very different. If humans managed to survive alongside them, we wouldn't have the company of most, if not all, of the mammals with which we are familiar today. Giraffes, elephants and other mammals wouldn't have had space to evolve. Would we be hunting Hadrosaurs instead of elk? Or farming Protoceratops instead of pigs? Would dinosaurs be kept as pets? And could the brighter dinosaurs have evolved into something humanoid?
Mar 13 2007

Season 2006

19 Episodes

Clouds of alien life forms are sweeping through outer space and infecting planets with life – it may not be as far-fetched as it sounds. The idea that life on Earth came from another planet has been around as a modern scientific theory since the 1960s when it was proposed by Fred Hoyle and Chandra Wickramasinghe. At the time they were ridiculed for their idea – known as panspermia. But now, with growing evidence, it's back in vogue and even being studied by NASA. Horizon meets the scientists on a mission to get to the bottom of the beginnings of life on Earth - from the team in Texas who are lovingly building a robotic submarine called DEPTHX to explore a moon of Jupiter, to Southern India where they are investigating a mysterious red rain which fell for two months in 2001. According to local scientist Godfrey Louis, the rain contains biological cells unlike any he had seen before – with no DNA and the ability to replicate at 300°C. Louis has come to the conclusion that the cells are extra-terrestrial in origin.
Nov 14 2006
Pandemic 2006x18
A simple virus that started in the belly of a dead bird is set to embark on a global killing spree. H5N1 - a bird flu virus with the potential to become humanised and mutate into the next pandemic flu virus. Horizon explores what could happen if a flu pandemic hits. The last flu pandemic in 1918 killed an estimated 50 million people worldwide. A virus today can spread much easier, much faster and there are estimates that hundreds of millions could be infected and potentially die.
Nov 07 2006
20 robotic cars, with no drivers and no remote controls, race across the Nevada desert. Horizon follows 3 teams and their cars as they develop their vehicles.
Oct 31 2006
Human v2.0 2006x16
It has been predicted that by 2029 computers will be powerful enough to rival that of the human brain. Will be able to download ourselves into a computer and live forever? Or will a race of super intelligent destructive machines rise. The only thing we know for sure is the moment is coming and whatever it brings is inevitable.
Oct 24 2006
In 2005, Isabelle Dinoire become the first person to receive a new face. The decision made by French surgeons to perform the operation went against the findings of almost every other ethical committee in the world and has since sparked a fierce debate over the ethics of the operation. In the UK, a team led by Peter Butler struggles to get approval to perform the first full face transplant. Do the risks outweigh the benefits? Are face transplants really in the best interest of the patient? Horizon investigates.
Oct 17 2006
Danny Wallace is on a mission to convince the world that chimps are people are to. If they are should they have the same rights as people?
Oct 10 2006
Over 90% of plane crashes have survivors. Horizon investigate what you can do to increase your chances.
Oct 03 2006
A team of scientists set out to solve the mystery of chunks of ancient glass scattered in a remote part of the Sahara Desert. Their quest takes them on a perilous journey into the Great Sand Sea, the wastes of Siberia and the test site of the world's first atomic bomb in New Mexico. What their search uncovers is a devastating new natural phenomenon.
Jul 20 2006
Horizon explores the topical scientific issues investigates, the truth behind our fear of radioactivity and asks whether our nuclear nightmares really are based on reality. From Hiroshima to Chernobyl scientists have been studying the impact of exposure to radiation for over 60 years and have always assumed that any level of radiation is bad. But now some scientists are questioning the power of radiation to cause cancer and finding evidence to suggest that it may have beneficial health effects.
Jul 13 2006
The science series explores varying attitudes to smoking around the world. Filmed in a single day, the documentary meets the people whose lives are defined by the cigarette. Contributors include Allen Carr, who claims he may get viewers to quit by the end of the programme, the inventor of the nicotine patch Dr Jed Rose and Dr Chris Proctor, the chief scientist at British American Tobacco who has the tricky task of making a safer cigarette.
Jun 29 2006
Is Pluto really a planet? Is it just an asteroid? Horizon investigates.
Jun 22 2006
The curious tale of an American millionaire optometrist and his dream to save humanity.
Jun 15 2006
The amazing story of Dr Temple Grandin's ability to read the animal mind, which has made her the most famous autistic woman on the planet.
Jun 08 2006
An investigation into the scientific approach to sporting success, as demonstrated by the former East Germany and latterly Australia. British children are already in training for the London Olympics and the programme looks at what it takes to produce a successful modern Olympian.
Mar 18 2006
Only 4% of our universe is made from stuff we understand. Horizon explores the 96% that is made up of the elusive substance 'Dark Matter'.
Feb 09 2006
The coastline that protects the city of New Orleans is sinking into the ocean. Horizon explores what can be done to save the city if it is worth saving at all.
Feb 02 2006
Horizon explores a new theory of evolution.
Jan 26 2006
The story of three women as they attempt to overcome the odds and give birth to a baby.
Jan 19 2006
Is a space tourism revolution just around the corner?
Jan 12 2006

Season 2005

20 Episodes

The controversial science of epigenetics suggests you may inherit a lot more than you imagine from your forebears. The scientists who believe your genes are shaped in part by your ancestors' life experiences.
Dec 15 2005
On 7 July 2005 Britain experienced its first ever suicide attack. Four bombs exploded in central London, killing 52 people and injuring over 700. When Scotland Yard launched one of the biggest investigations in its history, another first was quickly uncovered: the suicide bombers were home-grown, they were young British men, attacking their own country. Horizon explores what makes someone want to blow themselves – and others - up?
Dec 08 2005
Over a billion kilometres away, Saturn's largest moon, Titan, holds tantalising clues to how life began here on Earth. Horizon tells the story of the Cassini-Huygens spacecraft, the most ambitious and expensive interplanetary space mission of all time.
Nov 10 2005
Time is running out for the rainforest, but a team of scientists have come up with a unique strategy to help save it: a giant inflatable raft.
Oct 13 2005
Scientists once got sacked for suggesting oily fish was good for you. Now all and sundry are hailing it as a panacea.
Oct 06 2005
At the Xishan Hospital, near Beijing, a remarkable medical pilgrimage is taking place. The sick and the dying are travelling here for a treatment pioneered by Dr Huang Hongyun. He claims he can restore functions that Western doctors said were lost forever. Horizon investigates his methods but are they too much too soon.
Oct 06 2005
Is the hobbit a new human species or nothing more than a modern human with a crippling deformity?
Sep 15 2005
Has Stephen Hawking been wrong about the universe for the last 30 years? Horizon explores his latest theory.
Sep 08 2005
How the biggest international forensic operation in history identified the victims of the most devastating natural disaster of recent times.
Sep 01 2005
This is the story by Horizon of an epic battle between science and nature. It's a battle to destroy a disease that is one of the biggest killers on the planet: malaria.
Jun 05 2005
In this documentary, Horizon presents the largest public health issue of recent years that has attracted such heated debate as the question of whether the MMR vaccine can cause autism. The MMR jab combines three childhood vaccines, against measles, mumps and rubella, into one injection, which is first given to children at around 12-18 months. Horizon presents new, exclusive evidence about the MMR jab.
May 29 2005
In this documentary on earthquakes, Horizon starts with the worst natural disasters of all time in December 2004. The cause of so much devastation was the most powerful kind of earthquake on the planet - a megathrust. Megathrust earthquakes only occur on a particular kind of fault. Scientists have now discovered that just such a fault could cause a huge megathrust earthquake and tsunami right off the coast of North America.
May 22 2005
Horizon brings us back two thousand years ago when a mysterious and little known civilization ruled the northern coast of Peru. Its people were called the Moche.
Mar 03 2005
This Horizon episode is about genetics in humans. Every parent wants their child to have the best in life. But would this extend to picking the best genes for them? To date, genetic technology has only been used to treat serious disease in children. But as ways are developed to manipulate our DNA, there are those who think that parents will inevitably want to choose their children's genes, and create 'designer babies'.
Feb 24 2005
In this documentary, Horizon follows the scientific world that was rocked by some astonishing news in March 2002 where a distinguished US government scientist claimed he had made nuclear fusion out of sound waves in his laboratory.
Feb 17 2005
Neanderthal 2005x05
Horizon investigates a strange skull that was discovered in 1848 on the military outpost of Gibraltar. It was undoubtedly human, but also had some of the heavy features of an ape... distinct brow ridges, and a forward projecting face. Just what was this ancient creature? And when had it lived? As more remains were discovered one thing became clear, this creature had once lived right across Europe. The remains were named Homo neanderthalensis (Neanderthal man) an ancient and primitive form of human.
Feb 10 2005
In this documentary, Horizon investigates Attention Deficit Hyperactivity Disorder (ADHD), which is one of the most feared and misunderstood of all medical conditions. Despite over 200 scientific papers being published on this neurological condition every year, it remains stigmatised and controversial. Some doctors don't even believe it exists. Yet it is estimated that as many as 3-5 percent of the childhood population, and over one million adults in the UK are affected by ADHD. These people are often described as stupid, lazy, disorganised, wild, out of control or woozy on drugs. But the reality is altogether more complex, and deeply moving.
Mar 03 2005
The story of Einstein's most famous equation E=mc² – its role in the creation of the atom bomb and our understanding of the beginnings of the Universe. Horizon brings you the second part of a two-part series on Albert Einsten. In the summer of 1939 Albert Einstein was on holiday in a small resort town on the tip of Long Island. His peaceful summer, however, was about to be shattered by a visit from an old friend and colleague from his years in Berlin. The visitor was the physicist Leo Szilard. He had come to tell Einstein that he feared the Nazis could soon be in possession of a terrible new weapon and that something had to be done.
Jan 27 2005
The unpredictable results of the Theory of Relativity. Horizon brings you the second part of a two-part series on Albert Einsten. In the summer of 1939 Albert Einstein was on holiday in a small resort town on the tip of Long Island. His peaceful summer, however, was about to be shattered by a visit from an old friend and colleague from his years in Berlin. The visitor was the physicist Leo Szilard. He had come to tell Einstein that he feared the Nazis could soon be in possession of a terrible new weapon and that something had to be done.
Jan 20 2005
Horizon producer David Sington on why predictions about the Earth's climate will need to be re-examined.
Jan 13 2005

Season 2004

18 Episodes

On 22 August 1965 Janet Reimer was granted her dearest wish: she gave birth to twins. The two boys, Brian and Bruce, were healthy babies, but they would lead tragic lives, blighted by one scientist's radical theory. When they were seven months old, the boys, who lived in Winnipeg, Canada, were sent to the local hospital for a routine circumcision. Unfortunately the doctor in charge of the procedure was using electrical equipment, which malfunctioned several times. On the last trial, Bruce's entire penis was burnt off. Brian was not operated on. The family were distraught. In the Sixties plastic surgery was not an option: even today it is not recommended that new-borns undergo penis reconstruction operations. It wasn't until several months later that Janet and her husband, Ron, saw a television programme that gave them some hope. Dr John Money, a highly renowned sexologist, featured in a debate about sex change operations on transsexuals. He had brought a transsexual with him who was convincingly feminine looking. Perhaps, thought Janet Reimer, this was the solution - they could turn their baby son into a daughter. She wrote to Dr Money immediately. He responded swiftly and invited them to come and visit him in Baltimore, Maryland. Dr Money is a highly intelligent, well respected, charismatic individual. He suggested to the Reimers that they bring their son up as a girl. Thus, when Bruce was 18 months old, he was castrated and a rudimentary vulva was created for him. The family now called him Brenda and tried to treat him like a little girl. Dr Money was the answer to the Reimers' prayers, but they were the answer to his too. He had studied people known then as hermaphrodites, now referred to as intersex, who are physically both male and female. As it was surgically easier to turn these people into females, this was standard practice. Dr Money had used case studies of hermaphrodites to show that there was a window of opportunity for surgery - a 'gender gate' - which lasted up to the age of two. During that period, he argued, if the parents chose the sex of the child, the way they brought it up would determine the child's gender, not its physical characteristics. But until this point, Dr Money had never put his controversial theory into practice with a non-intersex child. Now he had the perfect and unplanned opportunity to do so: a set of identical twins, two biological boys, one of whom could be raised a girl. Janet Reimer wrote to Dr Money of Brenda's progress and once a year the whole family visited him in Baltimore. When Brenda was five Dr Money started to publish her case - disguising her by referring to her as Joan/John - in his books. The case became a sensation. It was the proof that feminists in particular were looking for. It was proof, they argued, that there was no biological reason that boys are better at maths and that men should earn more than women. Nurture not nature determines whether we feel feminine or masculine. Widely cited in many text books, the case was a landmark study - hailed as proof of the overwhelming force of nurture - in spite of increasing evidence that hormones both in the womb and throughout a child's life, play a huge part in an individual's perception of themselves as masculine or feminine. Meanwhile, back in Canada, things were not so good for the Reimer family. Brenda behaved in a distinctly masculine fashion. She liked running and fighting and climbing and loathed playing with dolls. She had no friends and was increasingly lonely as her twin Brian was embarrassed to play with her in front of his other friends. She hated going to visit Dr Money. He insisted that to fully understand that she was a girl, she needed to grasp the difference between men and women, and frequently spoke to her about her genitalia. He took photographs of her and her brother naked. He tried to persuade her to have a vagina constructed, which, at the time, would have been made out of section of her bowel or else from the skin of her thigh, which would then be inserted into the pelvic region. He showed her graphic photographs of a woman giving birth when she was seven years old in an attempt to get her to agree to having a 'baby-hole' made. He also suggested strongly that she take hormone tablets in order to make her grow breasts when she was 12. Other scientists, including Dr Money's ex-students, argue that he did these things in the best possible interests for his patient - to make her believe that she was indeed a girl. Brenda however felt traumatised and became suicidal. Finally when she was 13, the family told her and Brian the truth. Brenda was intensely relieved as she had felt she was going insane. Almost immediately she turned herself back into a boy and called herself David. David received compensation money for the circumcision and used this to pay for surgery to have a new penis constructed. In his early twenties he met Jane Fontane, who had three children of her own, and t
Nov 04 2004
On 3 May 2003 a tornado smashed through two suburbs of Oklahoma City. It had struck at the height of the tornado season, yet residents were still shocked by the destruction it wrought. Eight thousand homes were destroyed, a billion dollars of damage was wreaked and 40 people lost their lives. What had hit Oklahoma City that day was not just any old tornado - it was a super-twister. Tornadoes are classified on the Fujita scale, or F-scale. Most tornadoes that occur around the world can be classified on the lower reaches of the scale - the F0s, F1s or F2s. These can still cause damage and have winds in excess of 160km/h. Supertwisters are an altogether different beast. Terrifying and destructive, at their most extreme they are powered by wind travelling in excess of 480km/h. This is strong enough to lift strong framed houses from their foundations and seriously damage even reinforced concrete. Every year hundreds of people around the world are killed or injured by supertwisters. Yet what makes them even more terrifying is that it is practically impossible to predict their appearance or movement. Why they form in the first place remains a mystery. Most US tornadoes occur in Tornado Alley, a flat mid-western stretch from Texas in the south to the Dakotas in the north. High season for supertwisters tends to be during spring, from March to June. Tornadoes usually appear during a thunderstorm. Supertwisters are associated with super-cells, the largest thunderclouds of all. These are enormous rotating columns of air that can be over 30km across and 18,000 metres high - twice the height of Mount Everest. All tornadoes form when warm, moist air is pushed upward by a mass of cold air. This creates an updraft within the stormcloud that can cause a large mass of circulating air. When this air comes in contact with the ground it becomes a tornado. What is not known is precisely what triggers this final stage to form a tornado... A group of scientists are trying to plug these gaps in our knowledge. These 'storm chasers' take their lives in their own hands every time they go out in the field. To get the crucial data they need to get close to the supertwisters. Their research is vital to finding a way of giving people a few extra minutes warning. The time might not be enough to save houses or possessions, but could save lives. To help them, they use the very latest technology. Many of them, like Howie Bluestein from the University of Oklahoma, track storms using a Doppler radar dish mounted on the back of a truck. Doppler radar uses sound waves to sense the movement of air and moisture in remarkable detail - it is the most accurate way of mapping the swirling wind patterns that make up a tornado. Many storm chasing teams use at least two of these trucks so they can record information on the storm from different angles. But even with all the latest equipment, storm chasers consider themselves lucky if they intercept one or two tornadoes each year. Gathering the data is one thing, working out what to do with it is another problem altogether. Much of the work uses specially designed computer models. Lou Wicker and his colleagues from the University of Illinois have spent the past decade developing state-of-the-art software that will help to explain precisely how a tornado forms. Some of his latest work involves working out how to visualise a storm using real tornado data, picked up from the storm chaser's Doppler radar. He added the real wind speeds, atmospheric pressure and humidity present before a storm into his model. Could this model use the data to make an artificial tornado within his computer? If possible, he should be able to observe the inner workings of the twister and therefore see what had triggered the final touch down. Wicker and his colleagues soon noticed something crucial - the simulation showed a clear hook of wind and a strong downdraft. His model also showed that just as the storm was intensifying a series of whirlwinds were forming at ground level. These tiny corkscrews of wind merged together into a much larger current and seemed to form the tornado itself. The whirlwinds which showed up in the computer were so subtle that in reality they would be invisible to the naked eye. What seemed to make Wicker's work so exciting was that these mini-whirlwinds had shown up on real tornadoes picked up by both Bluestein's and fellow supertwister expert Dr Josh Wurman's radar. Could identifying these tiny whirlwinds in advance be the key to finding the extra time in tornado prediction?
Oct 28 2004
With its famous rings, Saturn is the most distant planet clearly visible to the naked eye. But how did the rings get there and when were they formed? To study the planet in detail, scientists needed to get closer. So on 15 October 1997, the Cassini-Huygens spacecraft was launched. The Cassini-Huygens is one of the most ambitious spacecraft ever launched, taking seven years to reach Saturn. The mission itself consists of two separate probes. The first is the enormous Cassini probe, designed to gather information about all aspects of the Saturnian system, from its many rings to its 33 moons. The second is the Huygens probe, a smaller wok-shaped craft, attached to the side of Cassini. Its task is to plunge through the atmosphere of Titan, Saturn's largest and most mysterious moon. The project is a joint NASA, European Space Agency (ESA) and Italian Space Agency venture. It has cost $3.27 billion and involves over 17 countries. It was inspired by another successful mission- the launch of the two Voyager Deep Space probes. These left Earth in 1977, and arrived separately at Saturn in 1980 and 1981. They sent back revolutionary data, changing what scientists thought about the Saturnian system. They revealed that Saturn's rings are far more complex and dynamic than any one had ever imagined. They also suggested that the rings had been formed after the planet itself. Why? And how old were they? But the Voyager probes had to move on, past Uranus and Neptune and beyond, leaving these fundamental questions about the rings unanswered. Voyager also raised another mystery - Titan. Titan isn't just Saturn's largest moon, it is also shrouded in a thick orange atmosphere, composed mainly of nitrogen - similar to the Earth's atmosphere. Finding a place so far away which shared features with our own world was exceptionally tantalising. The building of the Cassini-Huygens project began in 1990. The Cassini probe was named after the French-Italian astronomer Jean-Dominique Cassini (1625-1712). Its job was to fly to Saturn, and remain in orbit around the planet for four years. The Huygens probe, named after Christiaan Huygens (1629-1695) who first discovered Titan, was to detach itself from Cassini and gather crucial information about the chemical composition of the moon's atmosphere and to reveal what kind of landscape lay beneath the clouds. Not surprisingly, the probes were armed with a formidable array of instruments. Cassini is capable of measuring everything from the planet's huge magnetosphere to tiny particles of cosmic dust. At the heart of the mission are the cameras - the so-called Imaging Science Subsystem. These have both a long and short focal length, which gives both high resolution pictures and the wider context. Cassini also carries a set of spectrometers which look at the same things as the cameras, but which can see wavelengths beyond those visible to the human eye. These wavelengths allow the spectrometer to deduce the chemical composition of whatever is being looked at. The combined weight of the two probes was a massive 5,712kg and it was to travel across a billion miles of space. This created a whole new set of problems - how to get such a massive craft to its destination. The mission planners turned to a technique known as a 'gravity assist'. The probe was to be launched by the largest rocket in the world, the Titan IVB. But that was just enough to get it out into space. Cassini was then routed by other planets, 'stealing' energy from their orbital momentum. The result is a kind of gravitational slingshot. After launching in 1997, Cassini passed by Venus twice, then Earth in 1999 and finally Jupiter at the end of 2000. On 30 June 2004, the spacecraft finally arrived at Saturn, having clocked up a speed of over 80,000km/h (approximately 50,000mph). But to get into orbit around the planet, Cassini-Huygens had to pass between Saturn's F and G rings. Mission planners had plotted a course through what appeared to be a gap, but if Cassini was hit by even a tiny particle the size of a grain of rice, the probe could be destroyed. At 19:36 Pacific Daylight Time (PDT), scientists waited anxiously at the Jet Propulsion Laboratory in California, as the manoeuvre (called Saturn Orbit Insertion) began, and Cassini fired its main engine to get into orbit. All eyes followed the signal given out by Cassini's low-gain antenna. At 21:12 PDT, the signal flattened out, indicating that Cassini-Huygens had successfully got into orbit around Saturn. The mission will last for at least four years, with the possibility of going on for longer. Cassini will use its wealth of instruments to study the whole Saturnian system. It's already providing intriguing information. One of the instruments onboard Cassini, the Ultraviolet Imaging Spectrograph (UVIS), will help scientists answer the question of how old the rings are. By looking at the reflected light in ultra-violet wavelengths, this instrument can tell what parts are ic
Oct 21 2004
In the mid-1990s, a team of American science students took on the might of the Las Vegas casinos, and came home with millions of dollars. Hard working engineering students during the week, they became high-rolling gamblers by the weekend and proved that, in one game at least, the house doesn't always win. The game was blackjack, and the students were from the world-renowned Massachusetts Institute of Technology (MIT). Their audacious winnings marked the climax of an arms race between casino and player that began 40 years earlier with maths professor Edward Thorp. He realised that the one feature of blackjack that made it different from other casino games also made it possible to beat. In most gambling games - roulette, dice, slot machines, the lottery - events in the past do not determine the future. The odds are the same on every roll of the dice or spin of the wheel. Winning streaks or losing streaks may occur, but they are only one possible result from the set of all possible outcomes. A fair coin that has shown heads ten times, still only has a 50% chance of showing heads on the next flip. Casinos and bookmakers make certain that the odds are always stacked slightly in their favour. In other words, over time, the house will always win.
Oct 14 2004
Until recently most scientists thought they knew what killed off the dinosaurs. A 10km-wide meteorite had smashed into the Yucatan peninsula in Mexico, causing worldwide forest fires, tsunamis several kilometres high, and an 'impact winter' - in which dust blocked out the sun for months or years. It was thought that the dinosaurs were blasted, roasted and frozen to death, in that order. But now a small but vociferous group of scientists believes there is increasing evidence that this 'impact' theory could be wrong. That suggestion has generated one of the bitterest scientific rows of recent times.
Oct 07 2004
Is Wednesday red? Take part in our experiment to test whether your senses overlap. Do melodies have a colour? Take part in our experiment to test whether you hear colours. Imagine if every time you saw someone called Derek you got a strong taste of earwax in your mouth. It happens to James Wannerton, who runs a pub. Derek is one of his regulars. Another regular's name gives him the taste of wet nappies. For some puzzling reason, James's sense of sound and taste are intermingled. Dorothy Latham sees words as colours. Whenever she reads a black and white text, she sees each letter tinged in the shade of her own multi-coloured alphabet - even though she knows the reality of the text is black and white. Spoken words have an even stranger effect. She sees them, spelled out letter by letter, on a colourful ticker tape in front of her head. Both James and Dorothy have a mysterious condition called synaesthesia, in which their senses have become linked. For years scientists dismissed it, putting it in the same category as séances and spoon-bending. But now, synaesthesia is sparking a revolution in our understanding of the human mind. Two synaesthetes seldom agree on the colours or tastes they experience. While Covent Garden may taste of crinkly chocolate to James, it's very unlikely to have the same taste for another synaesthete. And Dorothy's brother Peter, also a synaesthete, won't see M or Z in the same colour as she does. But despite these differences, scientists are now beginning to discover more and more overarching synaesthetic patterns. Dorothy doesn't only see letters and numbers in colour. Music produces a riot of colour, too. As Dorothy hears notes going from low to high, her colours change from black and purple to mid-browns and then yellows and whites. Overall, lower notes evoke darker colours and higher notes brighter colours - and this pattern is true for most synaesthetes. But surprisingly, when non-synaesthetes are asked to match colours and music, they show a similar pattern. Most of us seem to associate low notes with darker colours and high notes with brighter colours. The evidence of the synaesthete in all of us doesn't end here. Another clue comes from the way we manipulate numbers. More than half of all synaesthetes who see coloured numbers also experience their numbers arranged in space around them. Heather Birt is such a synaesthete, and she's followed by a stream of numbers wherever she goes. Recently, scientists started to investigate how non-synaesthetes deal with numbers. They found they're better at manipulating small numbers with their left hand, and their bigger numbers with our right hand. This suggests that we all somehow think of numbers as arranged in space, even if we're not aware of it. More evidence, it seems, that we're all synaesthetic to some degree. It's just that some people experience a more exaggerated version. A few scientists believe that synaesthesia might even explain how we evolved two of the traits that define our species and have transformed our world - creativity and language. Many famous artists have been synaesthetes - the jazz legend Miles Davis, for instance, and the painter Kandinsky. In fact, a number of studies suggest that synaesthesia may be more common among artists, poets and musicians. This has led some scientists to argue that synaesthesia and creativity may share a similar basis - that both may be down to brain processes that involve linking two seemingly unrelated areas. Some believe that our common synaesthetic abilities may also have been the springboard to language. Connections between our senses of hearing and vision, for example, could have been an important initial step towards the creation of words. Our earliest ancestors may have first started to talk by using sounds that actually evoked the object they wished to describe. According to this theory, language could have emerged from the multitude of synaesthetic connections within our brains.
Sep 30 2004
2001. A clandestine meeting of leading Israeli archaeologists are shown a remarkable artefact. It's a stone tablet, apparently from 1,000BC. The writing on its face describes repairs to the temple of King Solomon. It is the first archaeological evidence ever found of this legendary building. The relic caused a sensation. But this was only just the start. For authentication, the tablet was taken to the Geological Survey of Israel. Here, after a battery of tests, including radiocarbon dating, scientists officially pronounced the stone to be genuine. The tests even revealed microscopic particles of gold in the outer layer of stone. These were apparently the result of the tablet surviving the fire which, according to the bible, destroyed the temple when the Babylonians sacked Jerusalem in 586BC. The stone tablet was offered for sale to the Israel Museum, home to many of Israel's greatest treasures. Rumours suggested the asking price was as high as $10million. But the museum needed to know where the stone had come from. Even its owner was a mystery. To make matters more complex, the stone itself had disappeared again. The Israeli Antiquities Authority wanted answers. A nine month search for the mysterious stranger who had first appeared with the stone eventually led them to a private detective who had been hired by a well known antiquities collector, Oded Golan. Golan insisted he too was just a front man for another collector. But the authorities were suspicious. He was known to be the owner of the James Ossuary, another extraordinary artefact which had appeared a couple of years earlier. This was a burial box with an inscription linking it to Jesus' brother. The authorities raided Golan's apartment and recovered both the ossuary and the elusive stone. It was time to establish once and for all if both were genuine. So they set up a committee of linguists and scientists to examine them. Looking at the stone, several linguists said 'fake'. Some of the Hebrew, they claimed, was not ancient. Other experts claimed that so little is known of ancient Hebrew that it's impossible to be sure. The committee turned to geology. Dr Yuval Goren, a geo-archaeologist and head of the Archaeological Institute at Tel-Aviv University, soon found evidence that a team of sophisticated forgers had led the earlier experts astray. - The patina on the stone had in fact been manufactured artificially - The charcoal particles which produced the convincing radiocarbon date had been added by hand - The gold fragments hinting at an ancient fire were a clever final addition The authorities presented their conclusions. They announced that the stone tablet, and the James Ossuary, were elaborate fakes. But who was producing these fakes and how? Dr Goren decided to piece together how the stone tablet had been made. He tracked the origin of the stone itself - apparently a building block taken from a Crusader castle. It was even possible to work out how the fake patina had been manufactured and the ingredients used. What was clear was the team of forgers included experts in a range of disciplines. When the police took Oded Golan into custody and searched his apartment they discovered a workshop with a range of tools, materials, and half finished 'antiquities'. This was evidence for an operation of a scale far greater than they had suspected. Investigators have established that collectors around the world have paid hundreds of thousands of dollars for artefacts that came through Oded Golan's associates. Dozens of these items have now been examined by Dr Goren, and all have been revealed to be forgeries. Police now suspect that artefacts made by the same team of forgers have found their way into leading museums around the world. Some archaeologists have now concluded that everything that came to market in the last 20 years without clear provenance should be considered a fake. Many of these objects, like the stone tablet which started the investigation, were cynically playing on the desire of many of the collectors to see the bible confirmed as history. For those in search of the temple of Solomon - their goal is as far away as ever.
Sep 23 2004
Every year we spend £300 million on vitamin supplements, but do they actually do us any good? Some believe they offer the promise of preventing or even curing some of the world's biggest killers, such as heart disease and cancer. Others claim that taking large doses of some vitamins may in certain cases be harmful. So what are the facts? Nearly 40 years ago, one of the greatest scientists of the 20th century and double Nobel Prize winner, Linus Pauling, revolutionised the way people thought about vitamins. He claimed that by taking huge doses of vitamin C you could prevent or even cure the common cold. He predicted that if everybody followed his advice, the common cold could even be eradicated. Many scientists dismissed his theory as quackery, but the public loved it and it helped launch a huge industry. But the latest evidence shows the great man was mistaken. Vitamin C can help you once have got a cold, but for most people it does nothing to prevent you from catching one in the first place. Even if large doses of vitamin C do not prevent the common cold, some claim that it can still offer a more profound benefit. It is one of a group of vitamins called anti-oxidants that some believe can prevent illnesses such as cancer, Alzheimer's and heart disease. In 2004, scientists in the United States claimed that people could be missing any of the potential benefits of taking one of the world's most popular anti-oxidant vitamin supplements, vitamin E, because their bodies might not be absorbing it. But our own investigation suggested that the American scientists' conclusion could be mistaken. While most safety experts believe that vitamins C and E can be taken safely even in quite large doses, there is worrying evidence that one form of another common vitamin, vitamin A, could be linked to osteoporosis, a debilitating bone disease. If the theory is right it means that a person's diet, or some supplements that they take every day to improve their health, could actually be slowly and silently weakening their bones.
Sep 16 2004
It's one of the greatest stories ever told. The legend of Helen of Troy has enchanted audiences for the last three thousand years. In May this year a Hollywood film staring Brad Pitt and Orlando Bloom will be launched in Britain. But is there any reality to the myth? Horizon has unprecedented access to the scientist with the answers. Since 1988 Professor Manfred Korfmann has been excavating the site of Troy. He has never before spoken at this length. He has made amazing discoveries - how large the city was, how well it was defended and, crucially, that there was once a great battle there at precisely the time that experts believe the Trojan war occurred. But who had attacked the city and why? Horizon then follows a trail of clues - the ancient tablets written by a lost civilisation, the sunken ship rich in treasure, and the magnificent golden masks and bronze swords of a warrior people. The film reaches its climax in a tunnel deep beneath Troy, where Korfmann has made a discovery that may reveal, once and for all, the truth behind the myth. The story that emerges is one of great passion - but not, it seems, about love.
Mar 25 2004
This is the story of two genuine scientific heroes. For forty years, John Bahcall and Ray Davis were engaged in a single extraordinary experiment - to find out why the Sun shines. In the end they would triumph. Davis would win the Nobel Prize and, thanks to their work, a whole new theory about how the universe is put together may have to be created. At the heart of this story is a tiny, utterly mysterious thing called a neutrino. Trillions of them pass through your body every second, touching nothing, leaving no trace. Yet neutrinos are one of a handful of fundamental particles in the universe, essential to every atom in existence and clues to what makes the Sun work. But their ghost-like quality made trapping and understanding them immensely difficult. What then followed was a bizarre series of experiments. They led from a vat containing 600 tons of cleaning fluid, to a vast cavern in a Japanese mountain, to a hole in the ground in Canada two kilometres deep. What they would reveal would stun the world of science. It seems that neutrinos may be our parents. They may be the reason why everything, including us, exists.
Mar 18 2004
Tyrannosaurus rex - it's the scariest, meanest, most bewitching dinosaur of them all. Children are captivated by the sheer savagery of the teeth. Experts marvelled at the force of its bite - ten times more powerful than anything we know today. Movie makers made millions out of the terror it inspired. But could our picture of this monster be completely wrong? Was T. rex in fact a slow lumbering creature, with hideously bad breath, that couldn't get anywhere close to catching a Triceratops. Was it really a scavenger that lived off the scraps left by others? Was T. rex, in fact, a wimp? Featuring fabulous graphics and interviews with T. rex experts from around the world, Horizon looks at the new science that is challenging the legend of the dinosaur we love to hate.
Mar 11 2004
Diamond Labs 2004x07
Top quality diamonds at knock down prices? The only catch is: these rocks don't come out of the ground, but are made in a lab. This is the promise offered by a series of recent scientific breakthroughs. For most of us, it seems we may soon be able to bejewel ourselves like movie stars. But for De Beers, the world's largest diamond trader, could this, one day, be a serious threat? Following a dodgy meeting in Moscow, retired US Army General Carter Clarke acquired some experimental diamond growing machines, originally destined for the Russian military. He created the world's first gem diamond production line, to mass produce highly prized coloured diamonds. In a secret location south of Boston, a father and son team developed a different technique. Robert Linares and son Bryant have made colourless diamonds, allegedly higher quality than those found in nature. De Beers, at vast cost, set up a new scientific division called the Gem Defensive Programme. Its goal: to find ways to tell apart their natural diamonds from these new synthetic gems. But will the new synthetics slip through De Beers detection net? And could anyone really tell the difference? Horizon tells the story of the Diamond Labs.
Mar 04 2004
Thalidomide was one of the biggest medical tragedies of modern times. The images of children born with shrunken limbs still haunt anyone who sees them. And the tragedy is not over. Those children are adults today, still coping with their disability. For many, thalidomide is a drug that should be consigned to the dustbin of history - an awful cautionary tale of the errors that science can make. But now it is making a comeback - as a radical treatment for incurable blood cancers. But can it possibly be safe to use such a dangerous drug again? In a powerful and deeply moving film, Horizon tells the tale of thalidomide and how this drug that has become so infamous may now be giving hope to people who otherwise face death. It also explores the mystery at the heart of thalidomide. It seems that the reason why it works for cancer may at least partly explain something that has long baffled scientists - why thalidomide caused such terrible damage to babies in the womb all those years ago.
Feb 12 2004
Imagine a world where disease could be eradicated by an injection of tiny robots the size of molecules. That is the hope offered by nanotechnology - the science of microscopically small machines. But others fear nanotechnology could lead to a non-biological cancer - where swarms of tiny nanobots come together and literally devour human flesh. Sounds like science fiction? It certainly did until a brilliant young scientist called Hendrik Schön seemed to bring it a step closer. Schön's great breakthrough was to make a computer transistor out of a single organic molecule. It was an achievement of almost incalculable brilliance. Some speculated this technology could spell the end of the entire silicon chip industry. Crucially, Schön's transistor was organic. Suddenly, this seemed to be the first step towards true nanotechnology, where minute computers could grow as living cells. Scientists speculated about how these tiny machines could be used to target diseases with astonishing precision. Others wondered - could the military use them as a new weapon? Others, including Prince Charles, were terrified. If these machines can grow by themselves, how do we stop them from growing? What happened next would destroy reputations and shatter lives - because there was more to Hendrik Schön's discovery than anyone knew.
Feb 05 2004
This is the extraordinary story of how a small metal disc is rewriting the epic saga of how civilisation first came to Europe, 3600 years ago. When grave robbers ransacked a Bronze Age tomb in Germany, they had no idea that they had unearthed the find of a lifetime. But they knew that it was worth selling. It was a small bronze disc of exquisite design. So they contacted the archaeologist Harald Meller, offering to sell it to him for €300,000. Meller went deep into the criminal underworld and, after a police sting, he got his disc. It depicted the sun, the moon and the stars. This suggested an understanding of the heavens greater than that of the first great civilisations, like Egypt. Could it possibly be real? After exhaustive tests, the disc was declared genuine. Then a team of crack scientists pieced together what it meant. What emerged is a true marvel. This disc, it seems, is a Bronze Age Bible, combining an advanced understanding of the stars with some of the most sophisticated religious imagery of the age. In intellectual achievement and also age, it surpasses anything yet found in Egypt or Greece. It seems that civilisation had already dawned in Europe.
Jan 29 2004
This is the truth about the world's most famous, most glamorous and most controversial diet. The Atkins diet says that eating fat can make you thin. It says you don't need to bother watching the calories. Rene Zellweger, Geri Halliwell and a host of other celebrities swear by it. But many scientists think it is scientific nonsense. Some even believe it is dangerous. Horizon cuts through the confusion and provide the answers. When Dr Atkins first launched his diet, he was accused of breaking one of the most fundamental laws of nature. Scientists said that if you eat more, you'll get fatter. They also said it could kill. Fat increases your cholesterol levels. You'd get a heart attack. The only problem was that people who followed the Atkins diet got thinner. Much of the rest of us got fatter. Then came studies showing that cholesterol levels can actually improve on the Atkins diet. So what was going on? Horizon's investigation seems to show that the diet may really work - but for a reason and in a way that no scientists or even Atkins himself had seriously considered.
Jan 22 2004
With the help of doctors and scientists in America, Germany and Britain, Horizon unpicks the mystery of the Moscow theatre siege. In October 2002, Chechen terrorists took a thousand people hostage in a Moscow theatre and threatened to kill them. The problem was how to get them out alive. A bloodbath seemed inevitable. Three days later Russian special forces stormed the theatre using a secret gas to knock everybody out. 129 hostages died - apparently killed by the very gas that was meant to save them. Horizon investigates the mystery substance, and why so many died. The Russian authorities insisted their secret weapon was not lethal. The claim provoked contempt from the victims families, and incredulity among doctors and scientists around the world. But were the Russians actually right? The Russians offered just one clue. And in Germany there was a scientist who had the means to test it: a urine sample taken from one of the survivors shortly after he was freed. Horizon follows as extremely sensitive tests are performed to find out if the Russians were telling the truth, and uncovers a deeper secret.
Jan 15 2004
In a film that is in turns charming, disturbing and poignant, Horizon explores the relationship between science and the chimpanzee. It began with a magical story. A young girl ventured alone into the jungle and befriended a group of chimpanzees. What she saw became the stuff of scientific legend. But then, last year came a terrible tragedy. Frodo, one of the chimpanzees she had helped make famous, killed a human baby. That shocking act brought into focus a huge debate about the relationship between humans and chimps, and what these primates have taught us about the origins of our own behaviour. The saga of how Jane Goodall went into the jungle to study the chimps of Gombe in Tanzania has inspired novels and movies. Her observations revealed that chimpanzees were in many ways like humans. They used tools, had culture and even language. And what's more they had empathy. They were also capable of savage brutality against their own kind. Just like us. In fact many began to think that the origins of aggressive human male behaviour could be traced back to our shared evolutionary ancestry with chimps. In other words, men are genetically programmed to be violent. But then came some disturbing questions.
Jan 08 2004

Season 2003

19 Episodes

Time Trip 2003x19
Horizon's Time Trip is a thrilling journey deep into the strangeness of cutting-edge physics - a place where beautiful, baffling ideas are sometimes indistinguishable from the utterly crazy. On this journey, we meet a time-travelling pizza, a brilliant mathematician in a ski mask and even God. The journey ends with a strange and dark conclusion - one which calls into question our very existence. Ever since Einstein showed it was theoretically possible, the quest to travel through time has drawn eccentric amateurs and brilliant scientists in almost equal numbers. The amateurs include Aage Nost, who demonstrates his time machine in front of the cameras. The professionals include the likes of Professor Frank Tipler of Tulane University. His time machine sounds good - but it would weigh half the mass of the galaxy. There is, however, one way that time travel to the past could be possible. And it would be much more convenient. Future civilisations could use computers to create exact replicas of the past. Unfortunately that idea has physics trembling in its socks. Because if you can generate a perfect virtual reality version of the past, who's to say we are not one of the replicas?
Dec 18 2003
Could an unknown Englishman have been the first person ever to fly? To mark the hundredth anniversary of the Wright brothers inaugural flight, Horizon tells the remarkable story of Percy Pilcher. He could have been the most famous aviator of them all. Four years before the Wright brothers, he had constructed his own aeroplane. But on the day it was due to take off for the very first time, something so terrible happened that he was denied the chance of ever flying it. So Horizon has rebuilt his long lost flying machine to see if Percy Pilcher, the British amateur, could have claimed the glory and been the first person ever to fly. This film mixes dramatic reconstruction with fabulous contemporary scenes and gripping science. With a specially assembled team of historians, aviation experts and our own test pilot, Horizon painstakingly rebuilds Pilcher's flying machine and puts it to the test. The results will leave you cheering.
Dec 11 2003
Horizon tells the microbiological detective story in which some of the best brains in science have been pitted against the most extraordinary bug the world has ever seen. In 1984 it was discovered that HIV was the cause of AIDS. Straight away, there were confident predictions that there would be a vaccine ready for testing in just two years. Back then, just 1,292 deaths from AIDS had been reported. Now the figure is 25 million dead. By 2010 it is predicted there will be 85 million infections and 70 million deaths. And after 20 years there is still no sign of a vaccine. Despite work of dazzling complexity, the ambition of so many brilliant scientists has been constantly thwarted. Just as a vaccine seems to be working, the AIDS virus alters itself, and ten to fifteen years of work, and millions of pounds, go down the drain. These bitter disappointments are only compounded by the desperate human urgency of the work. This is a story where the clock doesn't stop ticking.
Dec 04 2003
Mixing powerful and deeply moving footage with telling forensic analysis, Horizon reveals what really went wrong on the Space Shuttle Columbia. The film's final revelation is telling. If NASA had acted differently, all seven astronauts could have been brought back to Earth alive. The film begins with the astronauts' final moments and shows the haunting scenes at Mission Control at the moment the disaster struck. What then follows is a disturbing detective story as the investigators gradually realise that the tragedy was caused by the failure of a small panel on the shuttle's left wing that had been built to be indestructible. No one had ever thought such an accident was possible. It has led to the shuttle being grounded for the foreseeable future. But that wasn't all. The film also shows that NASA had a number of options to bring the crew back safely - if only it had commandeered a spy telescope to visually inspect the damage. It could even have launched a rescue mission. But instead, NASA chose to rely on a computer programme for damage assessment. The programme got it wrong; as a result, there was no hope for those seven crew members.
Nov 27 2003
This week Horizon investigates the science behind the Bible Code. What he can see is truly horrific; according to Drosnin, the world could end in an atomic holocaust - in 2006. It sounds preposterous yet Drosnin claims to have serious scientific backing. Behind his findings lies the work of one of the world's most brilliant theoretical mathematicians, an Israeli professor called Eliyahu Rips. In 1994, using exactly the same ancient code, Michael Drosnin accurately predicted the assassination of the Israeli Prime Minister Yitzak Rabin - twelve months before it occurred. Drosnin's books on the Bible Code have been translated into most of the world's major languages and are read by millions of people. If he's right, he's stumbled on one of the most important discoveries ever made.
Nov 20 2003
Remember that long, hot summer? You might never see its like again. And all that talk of global warming? Forget it. This season's first Horizon reveals that a growing number of experts fear Britain could be heading for a climate like Alaska. Our ports could be frozen over. Ice storms could ravage the country, and London could see snow lying for weeks on end. It would be the biggest change in the British way of life since the last Ice Age. The first signs that such a disaster could happen came from deep within the ice sheet of Greenland. Scientists discovered that the Earth's past was littered with sudden, drastic drops in temperature. The big question was: could it ever happen again? Clues came from tiny shells at the bottom of the Atlantic; a huge glacier on the move in Arctic and some alarming discoveries in the far north of Russia. In the end there came the terrifying revelation: the Gulf Stream, that vast current of water that keeps us warm, could be cut off. According to one scientist, there is a one in two chance it will happen in the next century. Others say a climatic catastrophe could be heading our way in just twenty years time.
Nov 13 2003
Severe Acute Respiratory Syndrome didn't even have its name in February 2003, when it struck its first known victim, Johnny Cheng, in Hanoi, Vietnam. Within days, an international effort led by the World Health Organization (WHO) had massed scientific expertise to fight the mystery illness and avert the nightmare scenario of an uncontrollable pandemic sweeping the globe. Amid attempts to quarantine high risk groups of people, it seemed only fear could spread more rapidly than the disease itself. Nothing was known about the condition - where it had come from, how it was passed on, how to spot it, contain it or treat it. The infection was described merely as 'flu-like'. But if this was a type of influenza, it was one that killed up to 15% of its sufferers. The doctor treating Mr Cheng, who first contacted the WHO about the unusual symptoms, was one of six medics to die of SARS at the hospital. But the alarm had been raised and the Organization began to pull together a response. Colossal effort by scientists around the world - and unprecedented co-operation - followed. Meanwhile, the media made much of the risk posed by and to international travel, and watched financial markets respond in gloomy fashion.
May 29 2003
Flight 587 2003x12
265 people died when an Airbus operated by American Airlines crashed into the New York suburb of Queens in November 2001. The twin-engined jet took off from John F Kennedy Airport in fine conditions but hit trouble after just 67 seconds. In the following 38 seconds the plane started to disintegrate before nose-diving into the residential Rockaway area of the city. Everyone aboard was killed (along with five people on the ground) so the crash investigators had to rely on eyewitnesses, recovered parts of the plane and information from both air traffic control and the flight data recorders. The discovery of the Airbus' vertical tailfin hundreds of metres from the fuselage immediately focussed attention on whether the pilots lost the ability to control the plane. Why the tailfin detached was at the heart of the investigation by the National Transportation Safety Board. The airline and the manufacturer blame each other for creating a situation in which the stress on the rudder and tailfin exceeded the so-called ultimate load, the worst-case scenario set by the Federal Aviation Administration (FAA). A number of American Airlines pilots have taken matters into their own hands though: requesting transfers to other aircraft because of their safety concerns.
May 08 2003
Rudi Affolter and Gwen Tighe have both experienced strong religious visions. He is an atheist; she a Christian. He thought he had died; she thought she had given birth to Jesus. Both have temporal lobe epilepsy. Like other forms of epilepsy, the condition causes fitting but it is also associated with religious hallucinations. Research into why people like Rudi and Gwen saw what they did has opened up a whole field of brain science: neurotheology. The connection between the temporal lobes of the brain and religious feeling has led one Canadian scientist to try stimulating them. (They are near your ears.) 80% of Dr Michael Persinger's experimental subjects report that an artificial magnetic field focused on those brain areas gives them a feeling of 'not being alone'. Some of them describe it as a religious sensation. His work raises the prospect that we are programmed to believe in god, that faith is a mental ability humans have developed or been given. And temporal lobe epilepsy (TLE) could help unlock the mystery.
Apr 17 2003
Set against the back drop of awe inspiring geological beauty, a strange scientific adventure sets out to discover how a mineral clad cave network - the height of a 30 storey building and the length of six football fields - came to exist deep below the Guadalupe Mountains in North America. But this journey soon unravels a multitude of inexplicable phenomena and obscure geological formations, leading to the discovery of extreme rock-eating microbes - a testimony from primordial Earth and a glimpse of life elsewhere in the Solar System. Geologists believed that all limestone caves were formed by rain and underground water percolating through cracks in the rocks. Absorbing carbon dioxide from the soil, this water becomes weak carbonic acid, nibbling away at limestone, etching out networks of subterranean caves.
Apr 03 2003
Are we alone in the Universe? Or are there aliens somewhere in space? New evidence suggests not only might other life-forms be out there, they may even be living on the planet right next door to us - Mars. Recent discoveries have shown that Mars has all the ingredients for life, including water. Now the Mars Odyssey probe, launched in April 2001, has detected huge frozen areas of permafrost, just like that found in the Antarctic on Earth. According to astronomers, the position of this frozen slush could hold the key to Mars' mysterious water cycle. And the surface ice may hide something even more exciting below.
Mar 27 2003
Earthquakes are among the most devastating natural disasters on the planet. In the last hundred years they have claimed the lives of over one million people. Earthquakes are destructive mainly because of their unpredictable nature. It is impossible to say accurately when a quake will strike but a new theory could help save lives by preparing cities long in advance for an earthquake. The surface of the Earth is made up of large 'tectonic' plates. These plates are in slow but constant motion. When two plates push against each other friction generates a great deal of energy. For this reason earthquakes occur most frequently on tectonic fault lines, where two plates meet. However these fault lines run for thousands of kilometres; predicting exactly where a quake will occur is nearly impossible. In 1992, Dr Ross Stein was monitoring a large earthquake in a town in California called Landers. Three hours later, there was another quake 67km away at Great Bear. Stein believed that this was not simply an aftershock, instead he theorised the event at Landers had set off the earthquake at Big Bear. Stein believes that when an earthquake occurs the stress that has built up along the fault, is in part, transferred along the fault line. It is this energy transfer that causes other quakes to occur hours, days or months after the original.
Mar 06 2003
It was the simplest idea but one with enormous potential. If a gene is defective in the human body, just replace it with one that works properly. Gene therapy would mean that genetic disorders would become a thing of the past. Cancer would be cured, as would cystic fibrosis and hundreds of other genetic illnesses. Scientists were justifiably excited about the idea but, this enthusiasm that would end up costing one young man his life. Jesse Gelsinger was born with a liver disorder, a rare condition called ornithine transcarbamylase (OTC) deficiency that stops the liver metabolising ammonia. People with the disease can suffer from brain damage or coma. At its most extreme the illness is fatal. Jesse was lucky, able to lead a fairly normal life although he had a daily cocktail of drugs to control his condition. Jesse wanted to help others. When he was offered a chance to take part in a medical trial to test the safety of using gene therapy for OTC deficiency, he was keen to participate. He knew this was not a cure for his condition but that, by volunteering he might be able to help others in the future. Although the concept of gene therapy is simple, the practice of administering the treatment is much more difficult. In order to replace defective genes, doctors must get working ones into the body and to the place where they are needed.
Feb 27 2003
Understanding of humans' earliest past often comes from studying fossils. They tell us much of what we know about the people who lived before us. There is one thing fossils cannot tell us; at what point did we stop living day-to-day and start to think symbolically, to represent ideas about our environment and how we could change it? At a dig in South Africa the discovery of a small piece of ochre pigment, 70,000 years old, has raised some very interesting questions. Anatomically modern humans (Homo sapiens) emerged in Africa roughly 100,000 years ago. We know from fossil evidence that Homo sapiens replaced other hominids around them and moved out of Africa into Asia and the Middle East, reaching Europe 40,000 years ago. Prof Richard Klein believes art is a landmark in human evolution. Unquestionable art that's widespread and common suggests you're dealing with people just like us. No other animals, after all, are able to define a painting as anything other than a collection of colours and shapes. This ability is unique to humans.
Feb 20 2003
The drug Viagra revolutionised the treatment of sexual dysfunction in men on its launch five years ago. An accidental discovery, the tablet that gave impotent men the chance once more to have natural erections became the fastest selling pill in history and has earned its manufacturer, Pfizer, over $6bn. The search is now on for a similar drug that could help women. Research is revealing that female sexuality is more complex than expected. For women suffering from a loss of desire many scientists believe that drugs acting on the brain may be the way forward. A pioneering Scottish study may have identified just such a drug and begun testing it scientifically. An erection is achieved by filling the erectile tissue of the penis with blood. Blood vessels widen to allow blood in and then constrict to maintain the pressure. Male impotence was long thought to be a psychiatric effect, a result of stress, anxiety or depression. Medical advice was that there was not much to be done. Some patients refused to take this message on board.
Feb 13 2003
Dirty Bomb 2003x04
A dirty bomb is a radiological weapon but unlike a nuclear bomb, its purpose is to contaminate rather than destroy. It uses normal explosives to disperse radioactive materials in the local environment, creating a hazard to health that could last for years unless cleaned up. The relative ease of making such a bomb means it is a potent terrorist weapon but Horizon's investigation shows that the risk to health from most such devices need not be great. It also underlines the need for governments to act to secure radioactive sources from falling into criminal hands. Horizon deliberately avoids outlining the production process in any detail. Horizon publishes the results of specially commissioned research, modelling two possible dirty bomb scenarios: attacks on either London or Washington DC. The main conclusion is that the health risks from a dirty bomb explosion are localised to people who are close to the incident or are in contact with the contamination. Although the modelled attack scenarios could have wide-ranging economic repercussions, the majority of the population of either capital city would have only a negligible increase in their risk of developing cancer.
Jan 30 2003
The Earth is under constant bombardment. Each year, many fragments of debris hit our planet. Fortunately for us, most are so small that they burn up harmlessly in the atmosphere. However, there are hundreds of larger asteroids orbiting near the Earth. Many scientists now believe that one of these hit the Earth 65 million years ago, killing the dinosaurs, along with 90% of all life on the planet. What is more, it is only a matter of time before the Earth is hit again. Experts warn that nuclear weapons might not destroy an approaching asteroid. But Jay Meloch thinks he can use the power of the Sun to nudge an asteroid away from the Earth. Until recently, no one took the asteroid threat very seriously. Yet the evidence that we are in danger is on our own doorstep. We need only look at the cratered surface of the Moon to realise that it has been pounded by impacts throughout its history.
Jan 23 2003
Sleeping is an essential part of everyone's life yet it remains little understood is barely understood. You might think it's a relaxing recharge but in fact your brain is working harder at times overnight than when you're conscious in the day. Fresh insight into why and how we sleep has come from studying people with sleep disorders, especially sufferers of narcolepsy. The condition means that people fall asleep many times a day, completely out of the blue. A less known symptom is paralysing attacks, that can cause narcoleptics to fall to the ground - unable to move - several times a day. If a way can be found to ease their symptoms, it could open the way to helping any of us to control our sleep patterns and perhaps even to go without rest while staying alert. Gaynor Carr has been nodding off routinely since the age of seven. Her narcolepsy has made holding down a job impossible and made her question the idea of ever having children. Gary Beattie used to work in construction, until he fell asleep 7m up a ladder. He not only loses consciousness, his body becomes paralysed in a so-called cataleptic attack. Both of them say that showing emotion sparks the paralysing attacks and that has forced them to avoid laughing and crying. Bill Baird worked in finance but describes his stockbroking days as a race. The emotion of closing a deal would bring on a fit; he had constantly to hope he could get a client's signature before his almost inevitable collapse. His sleep is restless, with vivid nightmares when he is able to hear his surroundings while seeing terrifying hallucinations.
Jan 16 2003
On Easter Day 1722, Dutch explorers landed on Easter Island. A civilisation isolated by 4,000km of Pacific Ocean was about to meet the outside world for the first time in centuries. The strangers were about to find something very strange themselves - an island dotted with hundreds of huge stone statues and a society that was not as primitive as they expected. The first meeting was an immense clash of cultures. (Bloody too: the sailors killed ten natives within minutes of landing.) Where had the Islanders originally come from? Why and how had they built the figures? Modern science is piecing together the story, but it is far too late for the Easter Islanders themselves. They were virtually wiped out by a series of disasters - natural and man made - that brought a population of 12,000 down to just 111 in a few centuries. The Island's inhabitants today all have Chilean roots, making solving the mysteries even harder. There is no one to ask about the first people of Easter Island. Although fragmentary legends have been passed down, only science can hope to explain the rise and fall of this unusual civilisation.
Jan 09 2003

Season 2002

18 Episodes

In 1542, the Spanish Conquistador, Francisco de Orellana ventured along the Rio Negro, one of the Amazon Basin's great rivers. Hunting a hidden city of gold, his expedition found a network of farms, villages and even huge walled cities. At least that is what he told an eager audience on his return to Spain. The prospect of gold drew others to explore the region, but none could find the people of whom the first Conquistadors had spoken. The missionaries who followed a century later reported finding just isolated tribes of hunter-gatherers. Orellana's story seemed to be no more than a fanciful myth. When scientists came to weigh up the credibility of Orellana's words, they reached the same conclusion. As productive as the rainforest may appear, the soil it stands in is unsuited to farming. It is established belief that all early civilisations have agriculture at their hearts. Any major population centre will have connections with a system of intensive agriculture. If a soil cannot support crops sufficient to feed a large number of people, then that serves as an effective cap on the population in that area. Even modern chemicals and techniques have failed to generate significant food from Amazonian soil in a sustainable way . The thought that indigenous people could have survived in any number - let alone prospered - was dismissed by most scientists. Scientific consensus was sure that the original Amazonians lived in small semi-nomadic bands and that Orellana must have lied.
Dec 19 2002
250 million years ago, long before dinosaurs roamed the Earth, the land and oceans teemed with life. This was the Permian, a golden era of biodiversity that was about to come to a crashing end. Within just a few thousand years, 95% of the lifeforms on the planet would be wiped out, in the biggest mass extinction Earth has ever known. What natural disaster could kill on such a massive scale? It is only in recent years that evidence has begun to emerge from rocks in Antarctica, Siberia and Greenland. The demise of the dinosaurs, 65 million years ago (at the so-called K/T boundary), was as nothing compared to the Permian mass extinction. The K/T event killed off 60% of life on Earth; the Permian event 95%. Geological data to explain the destruction have been hard to find, simply because the rocks are so old and therefore subject to all kinds of erosion processes. It seems plausible that some kind of catastrophic environmental change must have made life untenable across vast swathes of the planet. In the early 1990s, the hunt for evidence headed for a region of Siberia known as the Traps. Today it's a sub-Arctic wilderness but 250 million years ago, over 200,000km² of it was a blazing torrent of lava. The Siberian Traps were experiencing a 'flood basalt eruption', the biggest volcanic effect on Earth. Instead of isolated volcanoes spewing out lava, the crust split and curtains of lava were released. And the Siberian flood eruption lasted for millions of years. Could volcanic activity over such a long time alter the climate enough to kill off 95% of life on Earth?
Dec 05 2002
Homoeopathy was pioneered over 200 years ago. Practitioners and patients are convinced it has the power to heal. Today, some of the most famous and influential people in the world, including pop stars, politicians, footballers and even Prince Charles, all use homoeopathic remedies. Yet according to traditional science, they are wasting their money. Sceptic James Randi is so convinced that homoeopathy will not work, that he has offered $1m to anyone who can provide convincing evidence of its effects. For the first time in the programme's history, Horizon conducts its own scientific experiment, to try and win his money. If they succeed, they will not only be $1m richer - they will also force scientists to rethink some of their fundamental beliefs. The basic principle of homoeopathy is that like cures like: that an ailment can be cured by small quantities of substances which produce the same symptoms. For example, it is believed that onions, which produce streaming, itchy eyes, can be used to relieve the symptoms of hay fever.
Nov 26 2002
Who were the first people in North America? From where did they come? How did they arrive? The prehistory of the Americas has been widely studied. Over 70 years a consensus became so established that dissenters felt uneasy challenging it. Yet in 2001, genetics, anthropology and a few shards of flint combined to overturn the accepted facts and to push back one of the greatest technological changes that the Americas have ever seen by over five millennia. The accepted version of the first Americans starts with a flint spearhead unearthed at Clovis, New Mexico, in 1933. Dated by the mammoth skeleton it lay beside to 11,500 years ago, it was distinctive because it had two faces, where flakes had been knapped away from a core flint. The find sparked a wave of similar reports, all dating from around the same period. There seemed to be nothing human before Clovis. Whoever those incomers were around 9,500BC, they appeared to have had a clean start. And the Clovis point was their icon - across 48 states.
Nov 21 2002
Freak Wave 2002x14
The world's oceans claim on average one ship a week, often in mysterious circumstances. With little evidence to go on, investigators usually point at human error or poor maintenance but an alarming series of disappearances and near-sinkings, including world-class vessels with unblemished track records, has prompted the search for a more sinister cause and renewed belief in a maritime myth: the wall of water. Waves the height of an office block. Waves twice as large as any that ships are designed to ride over. These are not tsunamis or tidal waves, but huge breaking walls of water that come out of the blue. Suspicions these were fact not fiction were roused in 1978, by the cargo ship München. She was a state-of-the-art cargo ship. The December storms predicted when she set out to cross the Atlantic did not concern her German crew. The voyage was perfectly routine until at 3am on 12 December she sent out a garbled mayday message from the mid-Atlantic. Rescue attempts began immediately with over a hundred ships combing the ocean.
Nov 14 2002
The England football manager, Sven-Goran Eriksson, believes that modern soccer matches are not won on the pitch, but inside people's minds. This film examines not just how Eriksson got inside his players' brains, but how he is now starting nothing short of a revolution in English football thinking. Eriksson's plan, devised with sports psychologist Dr Willi Railo, has two critical elements. These are to banish the crippling effects of the fear of failure from the minds of the England players, and to encourage them to train mentally as well as physically to reach the highest levels of performance - dubbed playing in 'the zone'. Neurologists and psychologists from some of Britain's most prestigious universities believe anxiety and the fear of failure can make top professionals turn in performances like amateurs, and that Eriksson and Railo have a way to help the England team endure the pressure. Their view is that England's football past has been dogged by fear of failure. Piling on pressure and relying on patriotism to get people to perform doesn't work when - at heart - it's just 11 footballers taking on 11. If players accept they could lose (and that it's alright when they do) then they'll be less nervous and less prone to what's called 'choking'. When sportspeople choke, familiar instincts are overwhelmed by pressure. Monitoring shows that people use different parts of the brain to perform actions which they are learning and those which are second nature. If the brain reverts to its learning mode, motor skills are constrained and that 89th minute penalty kick goes right over the bar. Visualisation is fundamental to making sure people play to their best at all times. As far the brain is concerned, there's little difference between practising a movement and just thinking through it. By thinking in advance just how intense the pressure could be, Eriksson's players can avoid choking when critical moments arise. Eriksson has a further psychological ace to play. For all his talk and motivation, he knows he's not there on the pitch. To carry his thinking onto the field, he relies on so-called cultural architects, players whose thinking is so close to his own that they do his bidding without even realising. The captain, David Beckham, is clearly one architect; the team keeps secret just whom the others might be. Sports psychology cannot predict whether England will win the World Cup. However, it does show that - for once - England are going into a major competition with an unprecedented degree of psychological preparedness, a critical advantage that the side has never boasted before. Thirty years of hurt may soon be over.
May 23 2002
On 4 April 1962, James Hanratty was led from the condemned cell in Bedford Prison to the gallows. On the way he protested his innocence, as he had done every day since he had been convicted of murder. At 8am, the noose was fitted round Hanratty's neck and he was hanged, launching one of the longest and most bitter appeal campaigns in the history of British justice. Hanratty's supporters believe that he was wrongfully convicted, the victim of dubious police evidence. The police maintain Hanratty was a vicious killer - and say they now have DNA evidence to prove it. After years of doubt, it appears that modern science holds the key to a 40 year old case. It all began when Michael Gregsten drove to the countryside with his lover, Valerie Storie. They had just parked in a quiet lay-by when a gunman got in the back of their car and demanded money. Several hours later Gregsten was dead and Storie had been raped and, with several bullets inside her, left for dead on the side of the A6 road. Amazingly, she survived to tell the tale. The nation was horrified by the savagery of the crime, and a massive manhunt was launched. Police began to close in on a small-time crook, 25 year old James Hanratty. Valerie Storie identified him as the killer, as did two other eye witnesses, who said they saw Hanratty driving Gregsten's car shortly before it was abandoned. Hanratty, a convicted thief, was unable to provide a credible alibi for what he was doing at the time of the murder, and in court, came across as arrogant, devious and unreliable. After a six week trial, and largely on the basis of this crucial eye witness evidence, Hanratty was found guilty and sentenced to death. As time went on, Hanratty campaigners became more and more convinced that the case against him was flawed. They claim that police withheld vital evidence from the defence, that Valerie Storie's identification of Hanratty was dubious, and the other eye witnesses may not even have seen Hanratty at all. The case against Hanratty began to look sufficiently weak that an appeal was begun, nearly 40 years after Hanratty was hanged. As part of the re-examination of the case, painstaking forensic analysis of the original police notebooks suggests that the police may even have altered the records of their interviews with Hanratty. So for Hanratty campaigners, on the evidence as presented in court in 1962, Hanratty should never have been hanged. Horizon has unique access to footage that covers a bizarre twist to this strange story. In 2001 the police exhumed Hanratty's body and took DNA samples, for comparison with crime-scene evidence still stored in police files. Using advanced techniques in DNA analysis which can analyse tiny fragments of DNA - even those from decaying, 40 year old corpses - the scientists made a conclusive match. It seemed that for all the campaign, Hanratty may well have been guilty after all. But with the judgement of the original trial possibly flawed by the suggestion of undisclosed evidence and police interference, the Court of Appeal faced a highly difficult decision. It had to decide whether the original evidence leading to Hanratty's conviction was so flawed that the guilty verdict should be overturned; or whether the case against him, including the new DNA evidence, was so compelling that the guilty verdict should remain. The A6 Murder looks at the evidence that led to two weeks of deliberation for the judges, and discusses where both sides go from here.
May 16 2002
Killer Lakes 2002x11
When Mount Nyiragongo erupted in the Democratic Republic of Congo in January 2002 it seemed like a disaster. Molten lava plunged down the hillside and poured into nearby Lake Kivu. Many died, and much of the city of Goma was destroyed. In fact, the local people were lucky. Had the eruption spread to one of the many volcanic faults under Lake Kivu, it could have unleashed one of the most terrifying of all natural phenomena - lake overturn. The phenomenon of lake overturn first struck in 1984 at Lake Monoun, in Cameroon. 37 people mysteriously died, suddenly and silently. A bizarre array of theories sprang up - secret testing of chemical weapons, a massacre by unknown terrorists; none really made sense. The scientists who looked into the disaster believed it had to be something to do with the lake itself, but they could not be absolutely sure. In 1986, before research into the Monoun disaster was made public, it all happened again. The tragedy of Lake Nyos, also in Cameroon, made headlines around the world when almost 1,800 people sleeping in houses around the lake suffocated in their sleep. The team of scientists that went to investigate concluded that carbon dioxide, trapped at the bottom of the lake, had suddenly risen to the surface, killing everything within 25km. They called their theory lake overturn. Eventually the scientists came to realise that carbon dioxide springs underground were pumping carbon dioxide into the lake and that the whole tragedy would be repeated if nothing was done. They installed an extraordinary fountain in the middle of the lake to help the gas disperse. Even so, the level of carbon dioxide in the waters remains a concern. The Nyos disaster promoted a survey of deep lakes in Africa and Indonesia to see where else lake overturn could happen. All seem to be safe, except one - Lake Kivu, in Rwanda. Lake Kivu is one of the largest and deepest lakes in Africa and two million people live around its shore. It is also filling up with carbon dioxide, although it's not yet saturated with the deadly gas. The only thing that could trigger a gas release would be a massive geological event. Worryingly, Lake Kivu is sitting in an earthquake zone and surrounded by active volcanoes, including Mount Nyiragongo. If an eruption or an earthquake was to happen under the lake, then the effect could release millions of tons of asphyxiating gas into the surrounding areas. Until a solution is found, millions of lives could be at risk.
Apr 04 2002
For years scientists have been trying to find the mysterious evolutionary master key responsible for transforming the dinosaurs into world-beaters. In the early Jurassic, 200 million years ago, they were a relatively small group of primitive creatures. By the late Jurassic, 50 million years later, they had become the magnificent array of carnivores and giant plant eaters that would dominate the planet for millions of years. In between lies the mysterious period of the middle Jurassic in which all these changes must have happened. But what were they? What was it that transformed the dinosaurs? Was there some terrible mass extinction? Had there been an amazing change in the environment? All this was speculation and theory. How and where would evidence come to light? Fossils from the middle Jurassic are incredibly rare. All anyone had to go on were a few small outcrops of rock dotted around the world. Then a treasure trove of fossils emerged from the midst of an Argentinian wilderness in the 1990s; thousands of square miles of mid-Jurassic rocks. On their first season in the field, palaeontologist Oliver Rauhut and his team unearthed two giant meat-eating dinosaurs and six huge long-necked dinosaurs. And there was much more: early mammals, crocodiles, fish and even plant life. They had uncovered a complete mid-Jurassic eco-system, a wonderful snapshot of life from this dark age of dinosaurs. "It's as if someone has unearthed a holy grail of dinosaur palaeontology," says British geologist, Dr Phil Manning. Oliver Rauhut describes the site as, "an extraordinary window on the mid-Jurassic." Above all, the hope is that this site may contain all the information they need to find the mysterious evolutionary forces that have eluded palaeontologists for so long. Already they've been able to test out many of their theories and draw some exciting conclusions. For instance, one theory about what might have happened in the mid-Jurassic clearly does not seem to be supported by the finds in Argentina: the mass extinction theory. The laws of evolution say that a major extinction event could have caused an explosion in dinosaur diversity like the one in the mid-Jurassic. Death on such a vast scale clears away the competition, allowing the survivors to evolve rapidly into new ecological niches. But there's no evidence in Argentina for an extinction event affecting the dinosaurs. A second theory was that a major climate change could have transformed the dinosaurs' environment, leading to the evolution of many new types of dinosaur. In Argentina there is indeed evidence for a dramatic change in the climate. At the time of the early, primitive dinosaurs all the continents were gathered together in one giant super-continent (Pangea). The climate of the super-continent was dominated by extremely hot and dry conditions - with rainfall concentrated in a short bursts. Scientists call this the time of the mega-monsoon. Then in the middle Jurassic Pangea began to split apart. The Argentinian site offers evidence that as the super-continent split up, the climate changed to a more moderate, less extreme climate. Many scientists believe that on its own climate change isn't enough to explain what happened to the dinosaurs in the mid-Jurassic. As Phil Manning points out, the dinosaurs could in theory simply move to find the climates they were most adapted to - unless something stopped them from moving, some major physical barrier that meant they couldn't follow the climate zones. When scientists looked into this, it became clear that as the super-continent split up, such a barrier was being formed. Today it's called the Atlantic Ocean. This major barrier would allow an evolutionary process called vicariance to operate - animals on different sides of the barrier are able to evolve separately. The problem was there was no proof of vicariance in the mid-Jurassic. Until Argentina. Fortunately the site has fossils from just before and just after the super-continent split in two, so it's ideally placed to judge whether vicariance was beginning to take effect. And the early results are lending support that this may have been a key factor in explaining what happened to the dinosaurs in the mid-Jurassic.
Mar 28 2002
This is the story of a book that could have changed the history of the World. To the untrained eye, it is nothing more than a small and unassuming Byzantine prayer book, yet it sold at Christies for over $2m. For faintly visible beneath the prayers on its pages are other, unique, writings - words that have been lost for nearly two thousand years. The text is the only record of work by one of the world's greatest minds - the ancient Greek, Archimedes - a mathematical genius centuries ahead of his time. Hidden for a millennium in a middle eastern library, it has been written over, broken up, painted on, cut up and re-glued. But in the nick of time scientists have saved the precious, fragile document, and for the first time it is revealing just how revolutionary Archimedes' ideas were. If it had been available to scholars during the Renaissance, we might have reached the Moon over a hundred years ago. The trail begins in the tenth century, when a scribe made a unique copy of the most important mathematics that Archimedes ever developed. For 200 years the document survived, but the mathematics in it was so complex that no one paid it any attention. So when one day a monk was looking for some new parchment - an expensive commodity at the time - to write a new prayer book, the answer seemed obvious. He used the Archimedes manuscript. He washed the Greek text off the pages, cut them in half, rebound them, and turned the Archimedes manuscript into an everyday prayer book. As he piously wrote out his prayers, he had no idea of the genius he was obliterating. Several hundred years later, the Renaissance was under way. Scientists were beginning to grapple with new concepts, working out how mathematics could be used to explain the World around them. Little did they know that many of the problems they were just encountering Archimedes had already solved more than a thousand years before. So, tragically, they had to do that research all over again, setting back the development of science and technology immeasurably. Then in 1906, in Constantinople, the document mysteriously turned up in a monastic library. An opportunistic scholar called Johan Ludwig Heiberg identified the text as Archimedes' writings. Although the Greek text was very faint, Heiberg was able to decipher some of it. What he found astonished him, and made the front page of the New York Times. He revealed that Archimedes' manuscript contained something called 'The Method', which showed not only Archimedes' final proofs, but for the first time revealed the process of how he went about making his discoveries. But then disaster struck again. World War One broke out and in its aftermath the Archimedes manuscript disappeared. Scholars had given up any hope of seeing the manuscript again, but in the 1960s odd rumours began to surface that it was to be found in Paris. It took 30 more years, but in 1991 an expert from Christies found it in the hands of a French family. When it reached auction, it was sold to an anonymous millionaire, who has now loaned it to the Walters Art Museum in Baltimore for conservation. Although the text is incredibly difficult to read, with state-of-the-art imaging equipment, they are gradually piecing together all of the writing for the very first time. And as the team in Baltimore peel back the glue, leather and centuries of dirt, dissolve the blue-tack and unfold the lines of Greek that are buried in the spine of the book, they are building up a picture of a man who was thousands of years ahead of his time. Not only was Archimedes coming to terms with the profound subject of infinity, he had taken the first crucial steps towards calculus, a branch of mathematics that had to be reinvented after the Renaissance, and which is today used to describe every physical phenomenon from the movement of the planets to the construction of a skyscraper. Who knows what human minds could have achieved if they had only known what Archimedes already knew?
Mar 14 2002
The World Trade Center was built on revolutionary design principles. It turned conventional architectural and structural techniques on their head. Built from a thin web of steel, its design was efficient, cost-effective and would inspire a new wave in modern building techniques. The result was two towers that were both lightweight and strong. When they were completed they were the tallest in the world. They were also milestones of architecture for another reason. The two towers were the first skyscrapers explicitly designed to withstand being hit by a jet plane. Although they had considered an aircraft impact, the designers of the World Trade towers had not anticipated the effect of an aeroplane's fuel load. British-born survivor Paul Neal tells how he smelt jet fuel rushing through the lift shafts close to his desk. "I recognised it because I'm a private pilot. I recall smelling it and instantly dismissed it as being illogical because it didn't have any place in the World Trade Center." Survivor, Bill Forney, recalls the instant that the 767 aircraft hit the North Tower one floor above where he was sitting. "The building started shaking. It lurched back and forth. It was the first time that I had truly thought that I might die. After a terrifying six to ten movements back and forth it was over and it was done." The World Trade Center had ultra-lightweight floors, and used the latest fireproof 'drywall' to protect the stairwells and lift shafts. Much of this internal structure seems to have been vaporized when the planes crashed, exposing the underlying steel to the intense heat of multiple fires. Brian Clark was one of the only four survivors from both towers to escape from above where the planes hit. He describess clambering over the shattered walls to break through a smoke-filled stairwell to get out. "Drywall had been blown off and was lying up against the stair railing." he says, "We had to shovel it aside." Another survivor, window cleaner Jan Demczur, found the drywall so soft that he was able to dig through it with a squeegee to break out of a lift he was trapped in. The two towers responded differently to the initial impacts, because there were crucial differences between the collisions. The South Tower, struck second, was hit lower, and the damaged zone of the tower then had to support a much greater weight of building above it . Rather than being hit head-on, the South Tower was hit at an angle. The plane wreckage scraped along the inside of the east wall and piled up in the northeast corner. Here, the fire burned intensely. At the South Tower's inner core, one escape stair was left intact - the one furthest from the plane's path. Even then, only four people, one of them Brian Clark, managed to get down it. At the northeast corner and along the east wall, the connections between the floors and the outer wall began to break as the floors sagged in the heat. The floors were an essential part of the structure, bracing both the outer walls and the inner core. Already weakened by the impact and now unbraced, the outer wall columns of the South Tower could not support the weight above them. At 9.59am Eastern Time, they snapped. The entire top third of the tower then lurched to the north and east; the floors inside the rest of the tower piled down onto those below. The downward wave of destruction - a progressive collapse - was then unstoppable. Meanwhile, the North Tower, which had been hit first, was still standing. The core of the Tower had been hit head-on, and the core had been left mostly undamaged by the impact. However, the direct hit cut off all the escape routes without exception. Meanwhile, the fire inside the North Tower was spread around the core. Again, connections between floors and columns started to fail in the heat, but here in the North Tower, it was the connections at the core that gave way first. Without the floors to brace it, the core could not stand alone. 29 minutes after the first collapse, the core in the North Tower collapsed vertically, pulling the rest of the tower down with it. The implications of the Twin Towers collapse are disturbing. Whether anything can be done to make modern lightweight skyscrapers more robust in the aftermath of 11 September is a vital question that must now be answered.
Mar 07 2002
In the mid 1800s, when Charles Darwin published his theory of evolution, one species of animal remained a mystery; where did birds fit on his evolutionary tree? Several years later his friend and colleague, Thomas Henry Huxley, came up with an answer. Huxley had recently examined a new fossil from southern Germany called Archaeopteryx which was causing considerable excitement in palaeontological circles. There were clear signs of feathers and it was obvious this was the earliest fossil evidence of a bird ever found. Huxley noticed something else as well. To him it looked as though the skeleton bore a striking similarity to that of a family of meat eating dinosaurs known as therapods. In the 1860s, on the basis of this observation, he announced a new theory; birds must have evolved from dinosaurs. The theory ignited what was to become one of the biggest controversies in palaeontology. Could Huxley possibly be right; how could a large, land-bound creature like a dinosaur have ever evolved into something as light and sleek as a bird? Many questioned the accuracy of Huxley's observations and ever since there has been a search for further fossil evidence to confirm the theory; a transitional animal which would incontrovertibly show how, in one creature, birds had evolved from dinosaurs. It has become one of the big missing links in palaeontology. In Spring 1999, at the Tucson Gem and Fossil Fair in Arizona, an American collector came across a new Chinese fossil which seemed to be just this transitional animal. It had the head and upper body of a bird but the tail of a dinosaur. It was called Archaeoraptor or 'ancient hunter'. Throughout the 1990s a number of important fossils emerged from China showing an apparent relationship between dinosaurs and birds. Practically all come from a region in the north of the country called Liaoning, one of the richest fossil areas in the world. Here, 130 million years ago, volcanic eruptions buried a wetland once teeming in wildlife. Many of the fossils have been magnificently preserved in the fine silt; some even have the remains of soft tissue attached to them. It was here, in 1996, that Chinese scientists found a creature they called Sinosauropteryx, an animal which bore many similarities to a dinosaur but appeared to have been covered in a feathery like coat. Two years later a joint Chinese/American team found an even more striking creature; a dinosaur like animal with very clear feathers which they called Caudipteryx. Other similar feathered dinosaurs followed, including in 1999, an important specimen called Sinornithosurus. Yet to those who questioned the relationship between dinosaurs and birds, these fabulous finds raised as many questions as they answered. Were the feather-like markings really signs of feathers, or were they something else? And were the skeletons really those of dinosaurs or were they, in fact, the skeletons of new, as yet unidentified, birds? What was still missing was the piece of evidence which would satisfy everybody. The new Archaeoraptor fossil, also from the Liaoning region of China, seemed to be just that. Here, in one animal, was a unique range of dinosaur and bird features. It had the skull and upper body of a bird, but the teeth and hands of a dinosaur. It also had the legs of a bird but the tail of a dinosaur. It was the most complete set of transitional features ever found in one creature. In November 1999 National Geographic Magazine gave it a special mention in an article about the origins of birds, calling it, "a true missing link.". The debate, started by Thomas Huxley in the 1860s, seemed to have been resolved. Yet within months, new finds in China showed Archaeoraptor to be an extremely clever fake. The head and upper body of a hitherto unidentified bird had been glued onto the tail of a previously unknown dinosaur. It was a journalistic disaster for National Geographic Magazine. The fossil, however, was anything but a disaster for palaeontology. By an extraordinary stroke of good luck, as scientists in China and America examined the head and tail separately, they found that both were, in their own right, unique and extremely valuable specimens. Both, in their different ways, contained powerful evidence that birds had evolved from dinosaurs.
Feb 21 2002
Everything you're about to read here seems impossible and insane, beyond science fiction. Yet it's all true. Scientists now believe there may really be a parallel universe - in fact, there may be an infinite number of parallel universes, and we just happen to live in one of them. These other universes contain space, time and strange forms of exotic matter. Some of them may even contain you, in a slightly different form. Astonishingly, scientists believe that these parallel universes exist less than one millimetre away from us. In fact, our gravity is just a weak signal leaking out of another universe into ours. For years parallel universes were a staple of the Twilight Zone. Science fiction writers loved to speculate on the possible other universes which might exist. In one, they said, Elvis Presley might still be alive or in another the British Empire might still be going strong. Serious scientists dismissed all this speculation as absurd. But now it seems the speculation wasn't absurd enough. Parallel universes really do exist and they are much stranger than even the science fiction writers dared to imagine. It all started when superstring theory, hyperspace and dark matter made physicists realise that the three dimensions we thought described the Universe weren't enough. There are actually 11 dimensions. By the time they had finished they'd come to the conclusion that our Universe is just one bubble among an infinite number of membranous bubbles which ripple as they wobble through the eleventh dimension. Now imagine what might happen if two such bubble universes touched. Neil Turok from Cambridge, Burt Ovrut from the University of Pennsylvania and Paul Steinhardt from Princeton believe that has happened. The result? A very big bang indeed and a new universe was born - our Universe. The idea has shocked the scientific community; it turns the conventional Big Bang theory on its head. It may well be that the Big Bang wasn't really the beginning of everything after all. Time and space all existed before it. In fact Big Bangs may happen all the time. Of course this extraordinary story about the origin of our Universe has one alarming implication. If a collision started our Universe, could it happen again? Anything is possible in this extra-dimensional cosmos. Perhaps out there in space there is another universe heading directly towards us - it may only be a matter of time before we collide.
Feb 14 2002
In September 1991 two hikers made a sensational discovery - a frozen body high in the mountains, near the border between Austria and Italy. It turned out to be 5,300 years old, the oldest frozen mummy ever found. Named Ötzi the Iceman after the Ötztal area where he was found, he became a worldwide sensation. The body was taken to Austria where scientists soon got to work on him. They analysed his bone density to find out how old he was (in his 40s, an advanced age for the time) and examined his wonderfully preserved belongings. The cause of his death remained a mystery. Now archaeologists are being joined by forensic scientists to investigate this unique case and new research has revealed a shocking answer. The investigation into Ötzi's death started at the scene of discovery. By examining photos which had been taken at the site, Austrian archaeologist Konrad Spindler worked out the layout. He was particularly intrigued by the position of the Iceman's copper axe, which was found propped up against a rock. He believed that this must have been placed in that position by Ötzi himself which meant that everything at the site had been preserved in the position it was when Ötzi died. His body was slumped face down on the ground, his cap lay nearby just as if it had fallen from his head. Scientists also wanted to know when he died so they examined the ice in which he'd been found. This contained pollen that they could identify as coming from autumn-flowering plants, so they concluded that Ötzi had died in the autumn. Together, this evidence implied that the Iceman might have got caught in a storm and died of hypothermia. Then the scientists looked inside the iceman using X-rays and CAT (Computer Assisted Tomography) scans. They saw what looked like unhealed rib fractures. So Spindler came up with what he called his disaster theory. He believed Ötzi was a shepherd who, one autumn, was returning to his home village with his animals. When he got there he became involved in some kind of argument or battle. He suffered a severe injury to his chest, fracturing his ribs, but managed to escape. He fled into the mountains and made it to the top, but by then he was exhausted from his injuries. He lay down to rest in a sheltered gully where he died of hypothermia and was buried in ice. The theory seemed to make sense, but it would not go unchallenged for long. In 1998, Ötzi was transferred to Italy since the body had actually been found just inside the Italian border. There the iceman was placed on display in a specially built museum in the town of Bolzano. To put the finishing touch to their display, the museum contacted forensic pathologist Peter Vanezis to reconstruct Ötzi's face, based on the shape of the skull. Vanezis normally works from the skull itself, but in this case, of course, that was impossible. So using the 3D CAT scan data and a rapid prototyping machine, the Austrian team created a detailed life-size replica of the Iceman's skull and gave this to Vanezis. He then used a laser to scan the skull into his facial reconstruction system. This measures the proportions of the skull and shapes a generic face to match. This allowed him to recreate Ötzi's face at last. Vanezis also wanted to look again at the theory of Ötzi's death, to question assumptions that the archaeologists had made. More and more evidence was questioning the disaster theory. An examination of the contents of Ötzi's intestine found hop hornbeam pollen. This pollen was incredibly well preserved - the cell contents still intact. This could only mean that it had been consumed very soon after the flowering of the plant just before the Iceman died. And since the hop hornbeam only flowers between March and June he must have actually died in spring. Also, evidence from the body and objects showed that the site had melted at least once and so things weren't necessarily in the same position. And finally, new examinations of the ribs showed that they hadn't been fractured before death - but been bent out of shape after death. Scientists seemed to be back to square one. IIt seemed his death might be shrouded in mystery forever. Then in June 2001, his new custodians, the Italians, decided to X-ray the body again. A local hospital radiologist noticed what looked like a foreign object near the shoulder, a shadow in the shape of an arrow. When they looked at its density they found it was denser than bone, it was the same density as flint. They'd discovered a stone arrowhead embedded in Ötzi's shoulder, which had been missed despite 10 years of intensive study. Now scientists can tell a new story of the Iceman's death. Ötzi was attacked and managed to flee. As he ran he was shot in the back with an arrow. He pulled out the arrow shaft but the head remained stuck in his shoulder. He reached the top of the mountains but was now exhausted and weakened from bleeding. He could go no further, lay down and died. Although this story fits the latest results,
Feb 07 2002
The magnificent ancient city of pyramids at Caral in Peru hit the headlines in 2001. The site is a thousand years older than the earliest known civilisation in the Americas and, at 2,627 BC, is as old as the pyramids of Egypt. Many now believe it is the fabled missing link of archaeology - a 'mother city'. If so, then these extraordinary findings could finally answer one of the great questions of archaeology: why did humans become civilised? For over a century, archaeologists have been searching for what they call a mother city. Civilisation began in only six areas of the world: Egypt, Mesopotamia, India, China, Peru and Central America. In each of these regions people moved from small family units to build cities of thousands of people. They crossed the historic divide, one of the great moments in human history. Why? To find the answer archaeologists needed to find a mother city - the first stage of city-building. They couldn't find one anywhere. Everywhere this first stage seemed destroyed or built over. And so, instead, scientists developed a number of theories. Some said it was because of the development of trade, others that it was irrigation. Some even today believe it was all because of aliens. Gradually an uneasy consensus emerged. The key force common to all civilisations was warfare. The theory was that only the fear of war could motivate people to give up the simple life and form complex societies. To prove it, archaeologists still had to find a city from that very first stage of civilisation. If it showed signs of warfare, then the theory had to be true. When archaeologist Ruth Shady discovered her 5,000 year old city of pyramids in the Peruvian desert, all eyes were on the New World. Ruth's extraordinary city, known as Caral, is so much older than anything else in South America that it is a clear candidate to be the mother city. It also is in pristine condition. Nothing has been built on it at all. Instead laid out before the world is an elaborate complex of pyramids, temples, an amphitheatre and ordinary houses. Crucially, there is not the faintest trace of warfare at Caral; no battlements, no weapons, no mutilated bodies. Instead, Ruth's findings suggest it was a gentle society, built on commerce and pleasure. In one of the pyramids they uncovered beautiful flutes made from condor and pelican bones. They have also found evidence of a culture that took drugs and perhaps aphrodisiacs. Most stunning of all, they have found the remains of a baby, lovingly wrapped and buried with a precious necklace made of stone beads.
Jan 31 2002
Fatbusters 2002x03
There is a new epidemic sweeping the world. It's been silently growing over the last few decades - only now is it reaching dramatic proportions. If current trends continue, more than one quarter of British adults will have this disease by the year 2010. This new epidemic is obesity. Scientists have recently made significant discoveries, which could lead to a drug treatment for obesity. In the meantime, until the drugs are developed, what should we do to keep off the pounds? One thing is certain. Willpower alone won't stop the epidemic of obesity; however, new research suggests there may be an easier way to fight the flab than joining the gym. Meet the Padded Lilies, a troupe of obese water ballet dancers who insist it is impossible to change our natural weight. They say they are born with a slow metabolic rate that has made them fat. But scientists now know that fat people actually have a faster metabolic rate. The Padded Lilies' suspicion that there is something wrong with their biology may well be true... but not in the way they thought. In 1994, research into a fat mouse was the starting point for a revolution in the science of obesity. The obese mouse was missing a hormone called leptin, which turns off the feelings of hunger. Wall Street went mad and the patent for leptin was purchased by a biotechnology company for millions of dollars. It seemed that at last a quick fix for obesity had been found. However, researchers quickly discovered that fat people had lots of leptin. There seemed to be no connection between the fat mice and obesity in humans. Then four years ago at Cambridge University, a young researcher, examined the blood of two young children who were so obese they could hardly walk and were confined to wheelchairs. She discovered these children, just like the mouse, didn't have the genetic information to make leptin and so could not suppress their appetites. She had for the first time ever identified human beings who were obese because of a genetic error and not because they didn't have the willpower to control their desire for food. In the last few years, research into obesity has snowballed and scientists around the world have begun to explore the area of genetic human obesity. Dr John Clapham is tackling the problem of obesity from another angle, by speeding up metabolism. Based in a top secret lab he has genetically manipulated a mouse that we all want to be. It can eat huge amounts of food yet, because it has an unnaturally high metabolism, it can't put on weight. This cutting edge science could lead to another target for the battle against obesity. However, we don't yet have this miracle treatment, so what can we do in the meantime? Dr James Levine has come up with an extraordinary idea. His study suggests there may be a way to shed those pounds without taking drugs or even joining a gym. He has found that people who fidget find it very difficult to put on weight. So we don't necessarily need exercise, we simply need to up the pace of our lives; walk rather than drive, climb the stairs rather than take the lift, don't sit still: fidget. All this should help us keep the calories at bay.
Jan 24 2002
Volcano Hell 2002x02
It began with a ghastly tragedy. In 1985 the massive Colombian volcano Nevado del Ruiz erupted, melting a glacier and sending a vast landslide of mud down on the people asleep in the town of Armero below. Twenty thousand died. In the aftermath science was set a challenge: to make sure such a catastrophe never happened again, by finding a way of accurately predicting when a volcano will erupt. Now, at last, it seems that one scientist may have met that challenge. Anyone can tell when a volcano becomes active. You can see it and you can smell it. But a volcano can be active for years without erupting. For those living nearby, there is no way they will abandon their homes and livelihoods just because of a few rumblings. The only way to persuade them to seek safety is to predict an eruption almost to the day, leaving just enough time for an evacuation. Scientists threw themselves at the problem, but there just seemed to be no way to make sense of the violent forces at work inside a volcano. Then along came Bernard Chouet. He is different from other volcanologists. His training lay in the complex equations and theories of physics, and he believed the answer had to lie in analysing the mysterious patterns drawn by seismographs. These measure the tremors caused by active volcanoes. Previous attempts to use these tremors to predict eruptions had proved fruitless. No one could find any correlation between the squiggles on the graph paper and the timing of eruptions. So Chouet locked himself away for five years and then emerged claiming he had found the answer. The key, he said, were seismic signals called long period events. These strange shapes had baffled volcanologists for years. Chouet said they were made by molten magma resonating - that is coming under pressure - inside the volcano. The more long period events there were, then the nearer the volcano was to exploding. Chouet could use the long period events to predict an eruption to within days. But another scientist was working on a completely different method. Stanley Williams could not be more different from Chouet. Where Chouet crunched numbers and looked at graphs, Williams climbed into craters and got up close; because he believed the best clue to when a volcano would erupt was to measure how much gas it was belching out. In 1993 the two methods came head to head. A conference was held at the foot of another Colombian volcano, Galeras. The highlight was to be a trip into the crater. Williams's gas readings indicated the volcano was safe. Chouet's long period events suggested the volcano might blow. After some debate, Williams led a team of volcanologists up the mountain. Suddenly Galeras exploded, killing six scientists and three tourists. Williams himself survived but was maimed for life. Since that day on Galeras, Chouet's methods have commanded wide respect and have been increasingly used around the world. In a dramatic demonstration last year Mexican scientists used Chouet's method to predict an eruption of the mighty volcano Popocatepetl. Tens of thousands of people were safely evacuated just before the biggest eruption of the volcano for a thousand years. No one was hurt.
Jan 17 2002
On a winter night in 373 BC, the classical Greek city of Helike was destroyed by a massive earthquake and tidal wave. The entire city and all its inhabitants were lost beneath the sea. What has bewitched archaeologists about Helike is that it was engulfed just when ancient Greece was reaching its height; when the philosophy and art that inspired the western world for thousands of years were invented. Its destruction was one of the most appalling tragedies of the classical world and most probably the reality behind the myth of Atlantis. But now, unlike Atlantis, a team of archaeologists may have found Helike - a lost city from the heyday of Greek civilisation. If it is as well preserved as everyone hopes, Helike could be a time capsule from this crucial time in human development. For centuries there had been just no sign of it. All archaeologists had to guide them were obscure and often contradictory ancient texts. So, despite numerous expeditions trawling the waters off the coast of Greece and vast amounts of money and technology thrown at the problem, no one could find anything except two small coins, unearthed over a hundred years ago. Then, in 1988 Dora Katsonopoulou and Steven Soter took up the challenge. Dora had grown up with the legend from childhood and was determined to find the archaeological treasure on her doorstep. Together they went back to basics and re-examined the ancient texts. These said that Helike had sunk into a poros, which everyone had taken to mean Gulf of Corinthe. But Dora thought that a poros could also be an inland lagoon. If she was right, the lost city which had inspired Atlantis might not be under the sea, as everyone thought, but somewhere inland. Studying the geology of the region, earthquake expert Iain Stewart argues that a large earthquake could well cause an inland lagoon. Small recent earthquakes in the region have caused ground liquefaction - a terrifying phenomenon where the ground literally turns to water beneath your feet. If the same had happened on a much larger scale then the whole city could have been plunged downwards, taking much of the city below sea level. But the earthquake in 373 BC could also have had a second more devastating effect. As well as liquifaction recent earthquakes have caused chunks of coastline to fall into the sea. If this happened on a large scale underwater landslides could cause a large wave, or tsunami. This would race across the Gulf of Corinthe, ricochet off the opposite bank and come charging back again, to crash over the sunken plain and fill in the lagoon. Dora's theory makes sense, except for one thing. There is no lagoon in the region today. There is, though, a trail of clues that explains what could have happened. An ancient bridge that is strangely nowhere near water shows how river sediment coming down from the mountains changes the shape of the plain - over hundreds of years the lagoon would have silted up, hiding the lost city beneath solid ground. A host of boreholes drilled into the plain and a remote cave with the legend attached to it have helped pinpoint where the now underground city might lie. Slowly Dora and Steven have pieced it all together, but there have been several false starts along the way. The first lot of ruins they found were Roman - a settlement built hundreds of years after Helike's disappearance to honour the famous lost city. Next they found ruins that turned out to be prehistoric - an early bronze age settlement built 2,500 years before Helike. It wasn't until 2001 that Dora and Steven at last got their breakthrough. Whilst Horizon was filming, the team uncovered ruins from classical Greece. Securely dated by coins and pottery, the team are convinced they have at last found the city they've been looking for. It will take years to uncover Helike's riches, but for the first time in thousands of years, we have glimpses of the lost city that inspired Atlantis.
Jan 10 2002

Season 2001

11 Episodes

Doctors Panayiotis Zavos and Severino Antinori claim they are ready to embark on the greatest human experiment of our age. They say they will attempt to clone a human being before the year is out. Most people think the objections to this are ethical - human cloning would create many moral dilemmas. There is another question that few ever ask: is the science actually ready yet for cloning healthy humans? Horizon follows the latest research, which has led many scientists to believe that Zavos and Antinori's plans to clone the first human could end in tragedy. The programme also meets couples like Matthew and Desiree Racquer who think cloning offers them the only way to raise a child who is truly their own. For decades, cloning remained within the realms of science fiction. The idea that instead of combining a sperm and an egg, a new human could be made from a single cell taken from an adult, seemed completely absurd. But that all changed in February 1997, when the Roslin Institute introduced the world to Dolly the sheep - the first animal cloned from an adult. Ever since Dolly, scientists have been continuing to experiment with cloning animals. So far, they have succeeded in cloning sheep, cattle, pigs, goats and mice, fuelling the belief that humans could be next. But even Dolly's creator, Professor Ian Wilmut, is concerned that beneath the veneer of success lies a disturbing reality. Most cloning attempts on animals so far have resulted in failed implantation or abnormal foetuses. Of the animals born alive, some soon die of catastrophic organ failure. Others appear to be healthy for weeks or even months, then die suddenly, sometimes from bizarre new illnesses which do not occur in nature. Years of painstaking work are only now revealing some vital clues to what is going wrong. Horizon talks to the scientists who have uncovered new evidence, suggesting that the process of cloning itself causes subtle errors in the way genes function. These random errors may be like a time bomb inside every clone, causing some of the strange - often fatal - problems. There's no reason to think cloned human babies would fare any better. According to embryologist Dr Susan Avery, death might be the best outcome for many human clones. If they survived, they would suffer from catastrophic illnesses that modern medicine is powerless to prevent or cure. Dr Zavos claims that these problems are the result of the still unsophisticated methods being used by animal researchers. Using advanced in vitro fertilisation ('test tube baby') techniques, he claims that he will strive to make human cloning safer than natural reproduction. Now though, it seems that some IVF procedures themselves are being investigated for possible harmful effects on the long term health of children. Professor Gerald Schatten of the University of Pittsburgh reveals evidence of these risks, which could be magnified in cloning. Most reproductive specialists believe that the danger to any human born by cloning is enormous. But the would-be human cloners are determined to clone a human baby. If they proceed, they may be courting tragedy.
Oct 25 2001
Out in deepest space lurks a force of almost unimaginable power. Explosions of extraordinary violence, are blasting through the Universe every day. If one ever struck our Solar System it would destroy our Sun and all the planets. For years no one could work out what was causing these awesome explosions. Now scientists think they have identified the culprit. It's the most extreme object ever found in the Universe; they have christened it a 'hypernova'.
Oct 18 2001
Life Blood 2001x09
Matthew Farrow was born with a rare and fatal blood disease, Fanconi's anaemia. His family and doctors thought he was going to die. Instead, aged just five, he became the first person in the world to be given a radical new treatment that few believed would work. It saved his life. The treatment was remarkably simple. A small quantity of blood taken from a newborn baby's umbilical cord and placenta was infused into him. Thanks to this cord blood, Matthew Farrow is now a healthy teenager and the treatment he helped to pioneer is giving hope to hundreds of critically ill children around the world. Cord blood contains a large number of blood stem cells, the mysterious factory cells that make all the red and white blood cells our body needs. Stem cells can rebuild a sick child's blood system in just a few weeks, by producing healthy new blood cells. Until Matthew's case, babies' umbilical cords and placentas were just thrown away at birth. Established medical thought said the only source of blood stem cells was the bone marrow and the only treatment for children with advanced blood cancers was a bone marrow transplant. One in three affected children cannot find a suitable bone marrow donor, and there was a desperate need for an alternative. The first doctors to suggest cord blood as an answer were dismissed as dreamers. But pioneering work over the last twenty years, mainly in America, has shown that the tiny quantity of blood contained in a newborn's umbilical cord and placenta is rich in the crucial stem cells. It is now being used to help to treat a broad range of blood cancers and serious genetic blood diseases. However, even its advocates admit that cord blood is no miracle cure. Cord blood is a significant medical breakthrough, but it cannot save everyone who is treated with it. This powerful and moving film follows patients and their doctors as they go through this arduous new treatment. Not all patients survive the transplant. However, for some patients this treatment is a lifeline when there is no option of a bone marrow transplant. Since 1990, over a thousand lives have been saved by this new treatment.
Oct 11 2001
In 2001, scientists announced an amazing discovery: the oldest skull of a human ancestor ever found. The 3 million year old fossil was remarkably complete, and unlike any previous fossil find. Its discovery - by a team led by Meave Leakey of the famous Leakey fossil-hunting family - has revolutionised our understanding of how humans evolved. The great mystery of our evolution is how an ape could have evolved into the extraordinary creature that is a human being. There has never been another animal like us on the planet. And yet ten million years ago there was no sign that humans would take over the world. Instead the Earth was dominated by the apes. More than 50 different species of ape roamed the world - ten million years ago Earth really was the planet of the apes. Three million years later, most had vanished. In their place came something clearly related to the apes, but also completely different: human beings! For years scientists searched for the first key characteristic which had allowed us to make the huge leap from ape to amazing human. At first they thought the development of our big brains was decisive. They even found the fossil that seemed to prove it, until along came the famous three million year old fossilised skeleton Lucy. This quashed the big brain theory, because here was a human ancestor which clearly walked on two legs, just as we do, but had the tiny brain of an ape. It seemed that the development of walking on two legs (bipedalism) was the first key human characteristic, the thing that set us on the road to becoming human. Lucy soon became even more important. She seemed to defy the laws of evolution. Normally a major evolutionary adaptation like walking on two legs is followed by what scientists call an adaptive radiation. Many related species quickly evolve from an initial evolutionary innovation. It gives a very bushy evolutionary family tree, with many different but related species. Scientists knew that the human branch of the family tree had begun about six or seven million years ago, when the planet of the apes ended. And yet there was no sign of an adaptive radiation. The family tree showed just a straight line leading from the planet of the apes through to Lucy. All that has changed with Meave Leakey's spectacular new discovery, named Kenyanthropus platyops or, less formally, Flat-faced Man. Her find is the same age as Lucy's species, but also completely different. It's proof that there were two different bipedal human ancestors living at the same time, more than three million years ago. And it's the first sign of the adaptive radiation that the theory of evolution says should have followed the planet of the apes.
Oct 04 2001
In November 2000, the international press reported an amazing find: a mummy, which was claimed to be that of an ancient Persian princess, over 2,600 years old. She was encased in a carved stone coffin, inside a wooden sarcophagus and was wearing an exquisite golden crown and mask. Her cloth-bound body was dressed with golden artefacts, with an inscription on her breastplate that read, "I am the daughter of the great King Xerxes, I am Rhodugune." All the internal organs had been taken out of her body, in the same way that the ancient Egyptians mummified their dead. It was the find of a lifetime, one of the most magnificent ancient treasures ever to be unearthed in the area. When the curator from the Karachi National Museum, Dr Asma Ibrahim, began her investigations into the mummy, a different story began to emerge. Horizon follows the story as forensic experts all over the globe analyse the mummy and her magnificent trappings and discover that she is an elaborate fake with a terrible secret. The mummy was found in a house in the desert region of Pakistan during a police raid, after a tip-off that it was to be illegally sold on the antiquities black market for $20m, and smuggled out of Pakistan. The Persian princess was immediately hailed as a major archaeological discovery. In fact, no Persian mummy had ever been found before, let alone a royal mummy. Mummification to preserve bodies had always been thought to be unique to the ancient Egyptians. However, there were some strange puzzles about this beautiful princess. The inscriptions on the mummy's breastplate had some grammatical errors. And there were peculiarities in the way she had been mummified. Several detailed operations common to Egyptian mummifications had been omitted. So it began to look like the mummy was not the princess she was supposed to be; perhaps she was a more ordinary ancient mummy dressed up to be a Persian princess by forgers trying to increase her value. As scientists investigated more closely, it became clear that this mummy had an even darker history. Computerised tomography (CT) scans and X-ray photographs of the body inside the mummy revealed that this was no ancient corpse but a woman who had died in the recent past, and that her neck was broken. An autopsy confirmed that this woman may indeed have been murdered to provide a body for the fakers to mummify - a body they intended to pass off as an ancient mummy for millions of dollars on the international art black market. And, finally there is evidence to suggest that they have done this not once but three times, raising the spectre of a mummy factory and the terrifying thought of yet more victims.
Sep 20 2001
Two disruptive children are followed through a controversial treatment regime.
Mar 06 2001
The controversial theory that for millions of years the Earth was plunged into catastrophe - entirely smothered in ice up to one kilometre thick.
Feb 22 2001
Tim Lawrence was an all-action stuntman until hit by Parkinson's Disease. Horizon follows his hopes of a more normal lifestyle using Ecstasy - a class A illegal drug.
Feb 15 2001
Killer Algae 2001x03
A tropical seaweed that escaped from an aquarium is endangering sea life in the Mediterranean and has gone on to infect the California coast.
Feb 08 2001
A trail from Greenland to Britain via Latvia offers new evidence into how evolution could have seen aquatic life form legs and walk.
Feb 01 2001
Builders in Miami, Florida unearth a ring of holes. The State then pays $27million to preserve either a Native American village or remnants of a 1950s sewerage system.
Jan 25 2001

Season 2000

20 Episodes

Horizon puts Graham Hancock's controversial theories about the past to the test, dissecting his evidence for a lost civilisation. Although scientists believe they have categorically disproved the myth of Atlantis, the idea is more popular now than ever before. The latest exponent of the theory of a single lost source for all civilisation, is Graham Hancock. Although he doesn't call it Atlantis, his compelling ideas about a sophisticated society destroyed in a flood 12,000 years ago seem to be based on a reworking of the original Atlantis myth, whose survivors brought culture, religion, monument-building and civilisation to the rest of the world. Graham Hancock offers various pieces of evidence to support his theory. He claims that the mysterious lost civilisation left its mark in ancient monuments, which he calculates were built to mirror certain constellations of stars. His hugely popular ideas have attracted such a wide audience that they stand to replace the conventional view of the past, which is based on scientific evidence that the civilisations of the ancient world were developed independently, by different peoples, on different continents. Horizon journeys across the world to examine Hancock's evidence for a lost civilisation and puts his theory to the test. Using modern astronomy, Hancock and his followers claim they can find messages from a lost society in the patterns of some of the greatest ancient monuments of the world. One colleague in particular, the author Robert Bauval, believes that the Giza pyramids in Egypt were built to mirror the stars of Orion's belt. Hancock also believes that the great temples of Angkor Wat in Cambodia mirror the constellation Draco as it would have appeared 12,000 years ago - at a time when the world was in the Stone Age. They see this as evidence that a great civilisation existed at this time, and later conveyed its wisdom to the peoples of the ancient world, before disappearing without trace from the archaeological record. Astronomers, archaeologists and geologists study this evidence. Dr. Ed Krupp of the Griffith Observatory in Los Angeles, is troubled by Bauval's claims. Horizon further examines Hancock's claims that the Sphinx and the mysterious ancient city of Tihuanacu in Bolivia were built 12,000 years ago by survivors of the lost civilisation itself. It considers the idea that either Antarctica or an extraordinary underwater site at Yonaguni in Japan were the original home of these vanished people. In a film full of contentious debate and powerful arguments, Graham Hancock's claims are pitted against cutting edge scientific analysis to discover whether his popular theory could be true.
Dec 14 2000
In 1965 in the Canadian town of Winnipeg, Janet Reimer gave birth to twin boys - Bruce and Brian. Six months later a bungled circumcision left Bruce without a penis. Based on a radical new theory of gender development the decision was taken to raise Bruce as a girl. In 1967 Bruce became Brenda and for the next three decades this case would be at the heart of one of the most controversial theories in the history of science. The man behind this work was world-renowned psychologist Dr John Money. In the 1950s Dr Money developed a theory that revolutionised our understanding of gender. Money believed that what he called our 'gender identity' - what makes us think, feel and behave as boys or girls - is not fully formed by the time of birth. While we may have some innate sense of being a boy or a girl, for up to two years after birth, our brains are, in effect, malleable and we can be taught to grow up as either a boy or girl by how we are raised - by the toys we are given, the guidance we receive from adults and the clothes we are given to wear. This became known as the 'theory of gender neutrality'. Dr Money had reached this conclusion by working with a rare group of individuals born with ambiguous genitals - people known as intersexuals or hermaphrodites. Dr Money studied groups of intersex children, and concluded that these children could be brought up as either boys or girls regardless of their genetic or physical sex. The legacy of Dr Money's work was a revolution in the treatment of 'intersex'. From the 1950s to the present day many intersex children born with a tiny penis are reassigned as female even if they are actually genetically male. But not everyone agreed with Dr Money's theories. Since the 1950s a small group of scientists including Dr Milton Diamond have questioned John Money's work. Diamond believed that our sex is already defined in our brains before we are born. He was convinced that the power of our genes and hormones was so strong that no amount of nurturing could override them. But John Money's theory had already become firmly accepted around the world and the most dramatic confirmation of the theory came from one particular case - the case of Bruce Reimer. Bruce was a normal boy, not an intersex child, and yet the decision was made to turn this boy who had lost his penis, into a girl. Under the guidance of Dr Money and his team at Johns Hopkins University this baby boy was surgically changed into a girl. After surgeons at Hopkins had castrated baby Bruce, he became baby Brenda. The family were instructed how to bring up Brenda as a normal little girl. According to Dr Money's theory she would grow up believing herself to be female and would go on to live a normal happy life as a woman. It seemed the ultimate test that nurture could override nature. Thirty years after Bruce became Brenda, the impact of this extraordinary story continues. After almost 14 years living as a female, Brenda Reimer reverted to her true biological sex - the case of the boy who was turned into a girl had failed. Brenda took the name David and for the last twenty years he has lived anonymously in his hometown of Winnipeg. For almost all this time no one knew the outcome of John Money's celebrated case. But now that David has gone public, the case is being widely discussed once again and its impact on John Money's theory of gender development and the treatment of intersex children is being hotly debated.
Dec 07 2000
In June 2000, astronomers made an extraordinary discovery. One that promises to solve one of the biggest problems in cosmology - how and why galaxies are created. Incredibly, the answer involves the most weird, destructive and terrifying objects in the Universe - supermassive black holes. Scientists are beginning to believe that these forces of pure destruction actually help trigger the birth of galaxies and therefore are at the heart of the creation of stars, planets and all life. Supermassive black holes are so extraordinary that until recently, many people doubted that they existed at all. The idea of giant black holes the size of the Solar System seemed more like science fiction that reality - such monsters would be so powerful that they could destroy the very fabric of the Universe. But in the last five years a series of discoveries has changed our understanding of supermassive black holes and galaxies forever. Using the powerful Hubble Space Telescope, scientists have been scanning nearby galaxies, searching for these giant black holes. It's a difficult job - by their very nature black holes swallow light - so can never be seen. So what scientists have been looking for is the effect of their massive gravity, hurling stars around them at immense speed. What they've found is more extraordinary than anyone could ever have imagined; not just evidence that these vast destructive monsters exist… but so far they're in every single galaxy toward which they have turned their telescopes. These giant agents of destruction appear to be common throughout the Universe. Scientists now think supermassive black holes are a fundamental part of what a galaxy actually is. Lurking at the heart of every single galaxy is a giant black hole of apocalyptic proportions - and that includes our own galaxy, the Milky Way. Astronomer Andrea Ghez has been studying the heart of the Milky Way for the last five years. What she's discovered is irrefutable evidence for a giant black hole, 3 billion times the size of our own sun. A black hole that could destroy the entire Solar System. And as Horizon was filming in July 2000, Ghez got some terrifying images - of the giant monster sucking up gas and stars at the galaxy heart. So what is this giant monster doing at the heart of our galaxy? What effect will this giant black hole 25,000 light years away have on us and the rest of the galaxy around it? These are questions that have been puzzling astronomers for the last few years - and in June, two separate groups of scientists found evidence that points to a startling answer. Rather than being destructive parasites, it seems that supermassive black holes may be essential in the very creation of the galaxies they live in. Exactly how our galaxy was created has mystified astronomers and physicists for years. Although there have been many theories, there's little evidence to explain how the gas in the early Universe condensed to form the galaxy we see today. Now scientists realise they've been missing a vital ingredient - a supermassive black hole. The immense gravity of a giant black hole might trigger the gas to collapse in the first place. By churning up the gas around it, a giant black hole would trigger the birth of stars, planets and life itself. Despite being the most destructive thing in the Universe, scientists now think our supermassive black hole could be crucial in creating the galaxy as we know it. The supermassive black hole in our own galaxy may be the reason we exist, but recent work suggests it may also be our end. At present Earth is so far away from the black hole that it can't affect us, but physicist John Dubinski thinks all that could change. In January 2000 he graphically simulated the final fate of our galaxy. In 3 billion years we will collide with the next door galaxy, Andromeda. The resulting apocalypse will force the Earth and our Solar System out of orbit. Dubinski has calculated a worrying 50:50 chance that we'll be sent hurtling in towards the black hole at the centre of this maelstrom. This would be fatal for the Earth.
Nov 30 2000
Amazing new discoveries in South America are revolutionising what we thought we knew about the dinosaur world. It now seems that South America was home to both the largest meat-eater - so new it's still without a name - and the largest herbivore - the enormous long-necked Argentinasaurus. And what's more, these dinosaurs lived at the same time in the same place. So it's possible that like in a science fiction movie, in this prehistoric world these two giants of their kind fought each other in a spectacular clash of the Titans. Horizon follows the scientists to Argentina as they unearth one of these giants - a brand new species of dinosaur; the biggest carnivore ever discovered. Not yet named, this new creature is even bigger than T. rex, the so-called 'king' of the carnivores. The new giant South American predator had a skull bigger than a man that was full of serrated, knife-like teeth and long powerful jaw muscles. They could dissect their prey with almost surgical precision. But even this formidable killing machine couldn't alone have taken on the massive long-neck, Argentinasaurus, which was the height of a five-storey building. It must have hunted in a pack. The problem is, the mega-meat-eaters have always been assumed to have been solitary creatures. The evidence shows that they lived and hunted alone. If they weren't pack hunters, then they would never have attacked Argentinasaurus. So it looked like the idea of a mighty battle between these two giants was simply science fiction. But extraordinary new clues are proving otherwise. Palaeontologist Phil Currie had long suspected that the giant carnivores might indeed have hunted in packs and he set out to find the proof. Only now after many years' work have Currie and his team unearthed the clues that are beginning to convince other palaeontologists that the huge carnivorous dinosaurs hunted in groups. With the help of his colleague Rodolfo Coria, Currie has discovered not one but two fossil bone-beds showing packs of massive carnivorous dinosaurs that have lain buried for millions of years. Each pack - one found in the badlands of Alberta, Canada and the other in Patagonia, Argentina - contains a whole range of individuals, from young through to fully mature adults indicating that they lived alongside in a herd. He's convinced that these dinosaurs were buried together because they were living together. These new finds are good evidence that these creatures really did hunt as a team. And that means a ferocious pack of enormous carnivorous dinosaurs roaming the lands of South America may indeed have taken on a huge Argentinasaurus in a fight to the death. So it may not just be science fiction - the Clash of the Titans could have happened after all.
Nov 23 2000
At the heart of the AIDS epidemic in Africa, there is a deadly mystery that has puzzled scientists for years. There are groups of people who are four times less likely to get HIV than other people, sometimes living just yards away, across a single valley - people with apparently similar behaviour and lifestyle. Scientists realised that if they could understand why these people are so much less vulnerable to the HIV virus, it might lead to an answer that could save millions of lives. And after 15 years of detective work it turns out there may be a remarkably simple answer: the high risk areas for HIV coincide with tribes who are uncircumcised. In Africa, it seems a man is much more likely to get HIV if he is uncircumcised. In Kaoma, Western Zambia, a young boy is on his way to the sacred Mukondaa - the tribal circumcision ground. Around him the tribal elders are gathered, dressed in their ceremonial garb, and vivid masks. But the young boy himself is an outsider, not from this tribe, and none of his relatives or ancestors have ever been circumcised. In fact, his parents are only prepared to break the taboo of their own tribe because they believe that circumcision could save his life by protecting him from AIDS. At first sight this belief seems like the kind of superstition to which desperate people often turn in times of plague. But now there is scientific evidence that suggests these people could well be right. There have now been twenty seven statistical studies that show a big difference in HIV infection between circumcised and uncircumcised men. For example, among the uncircumcised people of Kisumu in Western Kenya, a man is three times as likely to get AIDS than his circumcised neighbours. Among truck drivers in Mombasa the difference is four-fold. Horizon travels across Africa, tracing the work of scientists who have unearthed the statistical data behind this correlation. At the same time microbiologists have been battling to understand the complex and insidious virus, and their work indicates that the foreskin may be a key entry point for HIV. The logical conclusion for these scientists is that if you remove the foreskin, you begin to protect the man. No-one believes that circumcision can protect completely - the evidence so far only indicates that it reduces the risk of infection by HIV, and then only during heterosexual sex. Unquestionably, condoms are still the best protection. But in the many countries where the use of condoms is minimal, it seems that circumcision might help to reduce the spread of AIDS. In the absence of a vaccine for AIDS, and the lack of condom use in the developing world, should governments think the unthinkable and encourage the circumcision of young boys in non-circumcising tribes as a public policy? Opposing this idea are the voices of tribal elders who are loath to change tribal traditions that have existed for generations, and a fierce Western anti-circumcision lobby which believes that circumcision is a form of mutilation and violates basic human rights.
Nov 16 2000
In the summer of 2000, one of the great frontier cities of the Roman Empire, the city of Zeugma, all but disappeared from the face of the Earth under the flood waters of a dam. In a bid to modernise, the Turkish government has embarked on one of the most ambitious engineering projects in the world, building a series of dams on the Euphrates over the past twenty years. Almost every dam threatens ancient remains that lie below in one of the most archaeologically rich regions of the world. The completion of the Birecik dam, featured in this film, has flooded the valley where Zeugma is buried. The city on the flat plain has entirely disappeared and the waters have now risen to cover 30% of the city on the hillside. Horizon tells the story of the archaeologists' fifth and final visit, struggling to save what they could before the dam waters rose. It witnesses the uncovering of some of the most beautiful examples of Roman art ever found. The team’s discoveries at Zeugma caused an international outcry and further excavations were hurriedly put together. Since 1995, French archaeologists Pierre Leriche and Catherine Abadie-Reynal have taken up the challenge to save what they can from the city before the dam is finished. The archaeologists have two main tasks - to uncover the history of this desperately under-excavated region of Turkey and to remove what treasures they could from the site before they were lost forever. On this, their final excavation, they had to work against the clock: they only had a permit to dig for six weeks Zeugma was founded by one of Alexander the Great’s generals, Seleucia Nicator, and prospered under later Roman rule. It became one of the major cities of the Roman eastern frontier with a garrison of over 6,000 soldiers. The city’s bridge across the Euphrates made it one of the most critical trading cities in the region, on the silk routes to the East. The archaeologists know that the city contains vital clues to the history of the region. Previously looted exquisite mosaics have hinted at the treasures of its past that must be buried somewhere in the vast site. The part of the old city on the Euphrates flood plain, Apamea, was the first to go. But the archaeologists didn’t stand a chance of excavating it in such a short amount of time. So using a technology originally developed for finding oil and mineral deposits, they instead generated a picture of the buried city just as it lies below ground. They discovered a preserved ancient Greek city, laid out in a perfect grid. Meanwhile, in the remains of a Roman villa across the river, the archaeologists had an extraordinary stroke of luck. With only five days left on the excavation permit, Catherine Abadie-Reynal unearthed a masterpiece: a beautiful Roman mosaic floor. The discovery caused an international outcry and hit the headlines across the world. The archaeologists were granted more days to excavate, but they could not stem the tide of the dam project. With time running out, they uncovered more stunning mosaics in the villa. They were dug out from the site and sent to a local museum at Gaziantep - just in time. By mid June 2000, the newly uncovered fourteen room villa disappeared underwater. By October, the level of the water finally settled to form a vast, still lake in the valley. All excavations at the site ceased. There's recently been a move by the Turkish government to declare Zeugma a site of special archaeological interest. The remainder of the ancient city on the hillside could, in theory, still be explored. The dam will not only erase much of Zeugma from history. It will also displace 30,000 people, mostly Kurds, from the villages they have lived in for generations. For many, the loss of Zeugma is a tragedy.
Nov 09 2000
On August 2nd 1947, a British civilian version of the wartime Lancaster bomber took off from Buenos Aires airport on a scheduled flight to Santiago. There were 5 crew and 6 passengers on board the plane - named "Stardust". But Stardust never made it to Santiago. Instead it vanished when it was apparently just a few minutes from touchdown. One final strange Morse code radio message - "STENDEC" - was sent, but after that nothing more was heard from the plane. Despite a massive search of the Andes mountains no trace of the plane was ever found. For 53 years the families of those who disappeared have not known what happened to their loved ones. But earlier this year the plane suddenly reappeared on a glacier high up in the Andes, more than 50 km’s from the area where the plane was last reported. In February this year the Argentine army arranged a major expedition to visit the crash site beneath the massive Tupangato peak (6800m). Their aim was to bring back the human remains which had been found at the site, so that an attempt could be made at identifying them. The expedition also offered a unique opportunity for crash investigators to see if they could finally explain what happened to the ill-fated plane. Horizon gained exclusive access to this expedition, and now for the first time the full story of what happened to "Stardust" can be told. Why did the plane crash without warning? Why was it so far from its planned route across the mountains? What was the meaning of the last mysterious message - "STENDEC" - sent by the plane’s radio operator? Would it be possible more than 50 years after the crash to identify the remaining fragments of human remains that so graphically testified to the horrific destructive forces involved in the crash? And perhaps most mysteriously, why did the wreckage elude discovery for so long, despite regular mountaineering trips to Tupangato over the years? The expedition was joined at an army base in the Andes foothills. The threat of altitude sickness and the approach of winter meant that the trip required meticulous planning. More than 100 mules were used on the four day journey to the crash site, ferrying people and supplies to base camp, and then on up to an advance camp on the glacier. Several mules fell on the perilous journey over a 4500m pass; others bolted. Computer models may help explain why the plane vanished After four gruelling days the expedition finally reached the Tupangato glacier. They had enough supplies for 36 hours to investigate the crash site and finally explain what had happened to Stardust, and why it had disappeared for so long. At the crash site 'Horizon' followed the crash investigator as his ideas on the crash changed with each new discovery. The plane’s main wheels were discovered, one still fully blown up. One of Stardust’s Rolls Royce engines was lying on the ice, and nearby it’s propeller. Damage to the propeller indicated that the engine was working normally at the time of the crash. The wreckage offered no smoking gun to explain why the crash happened. Human remains were discovered - a hand, parts of a torso half buried in ice, fragments of hair - poignant reminders that this was above all a human tragedy. At a lab in Buenos Aires scientists are still trying to extract sufficient DNA from the remains to allow the remains to be identified. Few of those who went down with the aircraft were old enough to have children, so DNA matches are being made with more distant relatives, further complicating the work. The difficult task of identifying the remains brought down from Tupangato is still under way. Meanwhile the air crash investigators focused on the mystery of why the plane had not been found for so many years. Their analysis led them to suspect that the reason the plane had remained hidden for so long could lie with the glacier the wreckage was lying on. As soon as they returned from the mountains the investigators visited a glacial specialist in Mendoza. He told them that if the plane had crashed on the upper part of the glacier it would have been gradually buried by year on year snowfall, until it became a part of the glacier itself. It would then have travelled downhill with the glacier under the influence of gravity. Eventually it reached a warmer zone, and here the ice started to melt. Gradually, out of the melting ice, came the remains of Stardust. The wreckage hadn’t been found because for more than 50 years it had been buried inside the glacier. Stardust isn’t the only plane to be buried inside a glacier. In Greenland an entire squadron of second world war aircraft which crash landed on top of the Greenland ice cap in 1942 were recently discovered a hundred metres under the ice. They too had been buried by years of snowfall which gradually hardened into ice, until planes and glacier became one. But having solved the mystery of why Stardust had disappeared for so long, much hard work remained - particularly trying to explain why the pl
Nov 02 2000
It sometimes seems as if our planet has no secrets left - but deep beneath the great Antarctic ice sheet scientists have made an astonishing discovery. They’ve found one of the largest lakes in the world. It’s very existence defies belief. Scientists are desperate to get into the lake because its extreme environment may be home to unique flora and fauna, never seen before, and NASA are excited by what it could teach us about extraterrestrial life. But 4 kilometres of ice stand between the lake and the surface, and breaking this seal without contaminating the most pristine body of water on the planet is possibly one of the greatest challenges science faces in the 21st century. In 1957 the Russians established a remote base in Antarctica - the Vostok station. It soon became a byword for hardship - dependent on an epic annual 1000km tractor journey from the coast for its supplies. The coldest temperature ever found on Earth (-89°C) was recorded here on the 21st July 1983. It’s an unlikely setting for a lake of liquid water. But in the 1970’s a British team used airborne radar to see beneath the ice, mapping the mountainous land buried by the Antarctic ice sheet. Flying near the Vostok base their radar trace suddenly went flat. They guessed that the flat trace could only be from water. It was the first evidence that the ice could be hiding a great secret. But 20 years passed before their suspicions were confirmed, when satellites finally revealed that there was an enormous lake under the Vostok base. It is one of the largest lakes in the world - at 10,000 square km it's about the extent of Lake Ontario, but about twice as deep (500m in places). The theory was that it could only exist because the ice acts like a giant insulating blanket, trapping enough of the earth’s heat to melt the very bottom of the ice sheet. Biologists believe that because the lake has been cut off from the rest of the planet for 15 million years or more - well before the human race evolved - microbial life in the lake could have quietly been evolving into strange and unique forms. It’s a uniquely hostile environment for life - permanently low temperatures, hundreds of atmospheres of pressure, and no light for photosynthesis. In fact, as NASA have realised, the conditions directly replicate those found on Europa - the icy moon of Jupiter. So finding microbial life in Lake Vostok has a greater significance, but what are the odds of finding life in a cold, dark world? A discovery in Romania sheds new light on how life might survive in Lake Vostok. Shafts sunk into limestone by the Black Sea resort of Moville penetrated a previously unknown cave. Until that point it had been completely cut off from the surface - so just like Lake Vostok it’s an isolated world, with no light for photosynthesis. Scientists were surprised to find life not only existing, but thriving and found 33 species entirely new to science in the Romanian cave. The secret of the cave’s ecosystem was microbes that had adapted to live on chemicals found in the cave’s pools. Instead of using light to photosynthesise, these microbes used hydrogen sulphide in the water as their energy source - a process known as chemosynthesis. Now new research by geologists suggests that hot springs could be present in Lake Vostok, dramatically increasing the chances that it could be home to exciting new forms of bacterial life. But how to get into the lake? At the Vostok base itself scientists have been drilling down into the ice beneath the base for more than 10 years. The ice core they’ve extracted contains information on the Earth’s climate over the last half million years. When the lake was discovered they realised they were close to penetrating the ice above it, and gaining the first access ever to it’s pristine waters. But there was a problem… The drilling operation involved 50 tonnes of kerosene, used to keep the drill hole open. If the drill went into the lake, the purest body of water on the planet would have had its first oil slick. So the drilling was stopped 120m from the surface of the lake. However, there is another type of contamination, in a way more threatening than kerosene pollution, and that is the introduction of bacteria from the surface. At the moment, science is struggling to devise a high-tech robot probe that will be sent down 4km of ice, into the lake to search for signs of life. The challenge is to create a probe that will produce zero contamination. But now scientists have realised that they already have what they want, right in their very hands. The last few metres of the ice core drilled out on the the way down to lake Vostok, is actually lake water that has frozen onto the bottom of the ice sheet. The question is does this frozen chunk of Lake Vostok's water contain life, and if so, how can it be proved that this is life from the lake, and not contamination from the world above.
Oct 26 2000
Conjoined twins are among the rarest of human beings. There are probably fewer than a dozen adult pairs living in the world today. Only a few hundred pairs of conjoined twins are born in the whole world each year - they appear about once in every 100,000 births - but more than half of them are stillborn, and one in three live for only a few days. Of those who survive, a very small number will be selected for separation surgery. But as there are few hospitals with the skills and experience to perform this kind of surgery, separation is still a very unusual event. The harrowing decisions which surgeons have to make when faced with conjoined twins have been highlighted by the recent case in Manchester, England. Separating conjoined twins is not only technically challenging; it can involves life and death decisions about whether one twin should be sacrificed in the hope of saving the other. But "sacrifice surgery" has a poor record of success, and the Manchester case is the latest round in an international debate about the value of separation operations. The confidence of the surgeons, who believe that separation is essential, is challenged by medical historian, Dr Alice Dreger of Michigan State University. She argues that twins themselves might take a different view - if they were ever given a chance to express it. Horizon interviews two pairs of adult conjoined twins - Lori and Reba Schappell in Pennsylvania and Masha and Dasha Krivoshlyapova in Moscow. Lori and Reba are joined at the head; Masha and Dasha are joined in their lower body. They say that they prefer their conjoined lives, despite the problems and challenges, rather than face the risks of separation surgery. Lori and Reba live independent lives in their own apartment in Pennsylvania; Lori enjoys working with computers and Reba is developing a career as a country singer. Masha and Dasha had a difficult childhood; they were subjected to medical experimentation when they were very young and hidden away from the public. Since the end of the communist era they have been able to tell their story. Their autobiography is being written by a British journalist, Juliet Butler. Horizon also follows surgeons at the Red Cross Children's Hospital in Cape Town, Africa as they plan to separate eight month old twins, Stella and Esther Alphonce. The baby girls are joined at the hip, and the surgeons have little doubt that they can and should be separated, even though the operation carries risks of disability for the twins. Historically conjoined twins who were not, or could not be separated have lived successful lives, even if this involved putting themselves on public display. The original Siamese twins, Chang and Eng Bunker, were joined by a narrow strip of flesh and could easily be separated today. Like Millie and Christine McCoy, who also lived in the USA in the middle of the last century, they earned fame and fortune touring the world. But life for conjoined twins has never been easy, Millie and Christine were kidnapped and sold several times in their childhood. The British conjoined twin sisters, Violet and Daisy Hilton, provoked a scandal in the USA when one of them tried to get married. They did eventually marry, but they were never separated. The tragedy for conjoined twins who spend their lives together is that they inevitably die together too. When one twin dies, the heart of the other twin keeps pumping until he or she is drained of blood. Is this another reason why twins should be separated when they are young? There are no simple answers, because every pair of twins is unique.
Oct 19 2000
Scattered across the world’s oceans are a handful of rare geological time-bombs. Once unleashed they create an extraordinary phenomenon, a gigantic tidal wave, far bigger than any normal tsunami, able to cross oceans and ravage countries on the other side of the world. Only recently have scientists realised the next episode is likely to begin at the Canary Islands, off North Africa, where a wall of water will one day be created which will race across the entire Atlantic ocean at the speed of a jet airliner to devastate the east coast of the United States. America will have been struck by a mega-tsunami. Back in 1953 two geologists travelled to a remote bay in Alaska looking for oil. They gradually realised that in the past the bay had been struck by huge waves, and wondered what could have possibly caused them. Five years later, they got their answer. In 1958 there was a landslide, in which a towering cliff collapsed into the bay, creating a wave half a kilometre high, higher than any skyscraper on Earth. The true destructive potential of landslide-generated tsunami, which scientists named "Mega-tsunami", suddenly began to be appreciated. If a modest-sized landslide in Alaska could create a wave of this size, what havoc could a really huge landslide cause? Scientists now realise that the greatest danger comes from large volcanic islands, which are particularly prone to these massive landslides. Geologists began to look for evidence of past landslides on the sea bed, and what they saw astonished them. The sea floor around Hawaii, for instance, was covered with the remains of millions of years’ worth of ancient landslides, colossal in size. But huge landslides and the mega-tsunami that they cause are extremely rare - the last one happened 4,000 years ago on the island of Réunion. The growing concern is that the ideal conditions for just such a landslide - and consequent mega-tsunami - now exist on the island of La Palma in the Canaries. In 1949 the southern volcano on the island erupted. During the eruption an enormous crack appeared across one side of the volcano, as the western half slipped a few metres towards the Atlantic before stopping in its tracks. Although the volcano presents no danger while it is quiescent, scientists believe the western flank will give way completely during some future eruption on the summit of the volcano. In other words, any time in the next few thousand years a huge section of southern La Palma, weighing 500 thousand million tonnes, will fall into the Atlantic ocean. What will happen when the volcano on La Palma collapses? Scientists predict that it will generate a wave that will be almost inconceivably destructive, far bigger than anything ever witnessed in modern times. It will surge across the entire Atlantic in a matter of hours, engulfing the whole US east coast, sweeping away everything in its path up to 20km inland. Boston would be hit first, followed by New York, then all the way down the coast to Miami and the Caribbean.
Oct 12 2000
A handful of children around the world cannot tolerate the sun. Any exposure leads rapidly to skin cancer. They must either play indoors during daylight or be protected from head to toe in UV-proof suits. These children suffer from a strange and rare genetically-inherited disease, xeroderma pigmentosum, or XP, which means that within seconds of the sun's rays touching their skin, they are in danger of developing skin cancer. Sun Children with XP are missing the crucial gene that repairs damage to DNA and so exposure to any carcinogen - UV light, or even cigarette smoke - is lethal. Unless, they are thoroughly protected they will die from cancer at an early age. There is no cure. But these tragic children may may lead the way to new and better cancer treatment. Through studying XP sufferers, scientists have reached a whole new understanding of the genetic basis of cancer. They can now predict why one in three people will succumb to cancer. Scientists have discovered how the body survives damage and repairs itself and as a result of this, developed a radical new approach to treating cancer. Horizon explores the story of one family, where 5 out of 7 siblings suffer from XP, and how they provide the final proof that genes and DNA repair are linked to cancer. It follows an intricate 40-year scientific detective story from the discovery of DNA, through the chance findings of the cells of the XP families that led to the unexpected insight that DNA is capable of repairing itself and that the failure of this repair system underlies most cancers. After years of research, this insight is finally beginning to revolutionise medicine. Now a new concept in cancer drug therapy is just beginning medical trials based on the knowledge gained from children suffering from XP.
Apr 04 2000
Mar 30 2000
If extra-terrestrials do exist they must have a home. Horizon tells the story of the race to find out where in the Universe this might be. The answer, for scientists across the world, lies in the hunt for planets around distant stars. Stars which are trillions of miles away from our own solar system. But the history of the planet hunters is littered with failure. Centuries of searching had thrown up nothing. It was time for the new style planet hunters to step in. However, it is only in the last ten years that these scientists have had the technology to succeed. Even now looking for these distant planets is far from straightforward. The planets themselves are so faint that they cannot be seen, even by the most powerful telescopes ever built. Instead the astronomers must devise ingenious ways to search for clues to their presence. They examine stars just like our own Sun, across the galaxy, for any give-away characteristics that might indicate that they too have planets circling around them. A Swiss team finally struck gold in 1995 - convinced they'd detected a star that must have its own planet. Their discovery was the first of its kind but not the last. Other teams started to get lucky and suddenly it seemed like there were stars with planets everywhere. But the scientific community soon became restless. All they had done so far was detect the presence of alien planets - without seeing one, it was impossible to work out what the planet was like. If these planets really did exist it was time the scientists caught a glimpse of one of them. Only then would they be able to learn about the planet - its surface and its atmosphere. And only then would they know whether it could sustain life as we know it. Horizon follows the trials and tribulations of the planet hunters and shares in the triumph of the Scottish team who, just a few months ago, became the first to achieve the ultimate goal - to capture the image of an alien planet. It is orbiting another star, 55 light years away from Earth. The question is - how similar is this planet to our own and could it be home to alien life? Horizon uncovers the answers.
Mar 16 2000
Is GM Safe? 2000x07
Some people see GM food as a ground-breaking scientific idea that could help to end world hunger and reduce global pollution. Others see it purely as 'Frankenstein foods' on 21st century menus, bringing health and environmental disasters. But what are the real scientific facts behind the newspaper headlines? Scientists can manipulate the genetic code of life to produce plants with new characteristics never seen in nature. They can isolate any one gene from any organism like an animal or bacterium, and insert it into a completely unrelated species like a plant. The possibilities are almost endless - Scientists can insert a gene from a bacterium into a grape to make it resistant to viruses. Or they can engineer maize that resists drought or potatoes that resist pests, so farmers can use less pesticides on their crops. For thousands of years we have been tampering with the genes of plants by traditional breeding. But there's a key difference here - with traditional plant breeding genes cross within the same species. But GM allows plant breeders to break the species barrier. And for critics this is fundamentally unnatural. The fear is that the proteins produced by these foreign genes might be dangerous. Either because the protein itself is poisonous or because it might alter the chemistry of the plant so that the plant becomes toxic. Detailed tests are performed on the plants to discover if they are substantially biologically and chemically the same as before modification and if they have become toxic or allergenic. Critics believe that no amount of testing can ensure that GM crops are completely safe. They believe that there is too much we don't understand about the complex genetic make-up of living organisms. And that even though there is little evidence so far, there may be a risk that genetic modification could cause effects so unexpected that they will be missed by all the tests biotech scientists carry out. In contrast genetic engineers claim their work is safer and more predictable because they are moving just one or two specific genes, and they can more easily test the effects. But those who campaign against GM have another fear: that the genes from the engineered plant will spread throughout the plant world, creating new strains of superweed and superbug we cannot control. Horizon explores the key elements of scientific facts to try to answer the ultimate question: do the dangers of GM foods outweigh their benefits?
Mar 09 2000
What happens when a completely healthy person wants their leg amputated? Gregg is 55 and does not feel physically whole. This is despite the fact that he is physically healthy and able-bodied. Gregg believes he is incomplete with two legs and it has been his life-long struggle to get doctors to agree that removing one of his legs is the right thing for him. He isn't delusional. He knows what he is asking for and knows it is strange. But he cannot help his feelings. Gregg suffers from a rare but genuine psychological disorder - a form of body dysmorphia. And Gregg is not alone. Although Body Dysmorphia is rare, a worldwide network of sufferers is growing and demanding treatment. It affects both men and women and each person has a precise sense of which limb or limbs they want removed. Cases were cited a hundred years ago but still very little is known about the disorder. No one knows what causes it and very few psychiatrists have even encountered patients with the disorder. All that the patients seem to have in common is a strong memory of the first amputee they saw. They also report that the feelings started in childhood. However, the profession is now being forced to respond and devise methods of treatment. If not treated, it has been reported that suffers can go to extreme lengths to remove the unwanted limbs themselves. Some have even committed suicide. The difficulty with the condition is that the conventional methods for treating psychological problems, drugs and therapy, do not seem to be effective. The only treatment that does seem to be effective is surgery - actually removing the limb. The idea of using surgery is highly controversial and has divided the medical community. Some physicians consider it much too drastic a measure, possibly conflicting with their Hippocratic oath, not to cause harm. Others believe that it is the only way to free the patient of their obsession, 'curing' them of their psychological problem. At the present time, there is only one surgeon in Britain who has been prepared to perform such operations and who has publicly defended his decision. He has operated on two patients, both of who claim to be delighted with their new body-image and now free to get on with the rest of their lives. There are many other patients who seek similar treatment. Horizon 'Complete Obsession' follows a year in the lives of people who are body dysmorphic and are determined to have their limbs surgically removed. It follows the process they go through to try and achieve their goal.
Feb 17 2000
When and how did space and time begin? The birth of the Universe is one of the biggest mysteries in astronomy. It has perplexed the best scientific minds for centuries. Decades before space travel was possible, astronomers dreamed of putting a telescope into orbit to try and answer these fundamental questions. It wasn't until the 1970s, when space flight had become a reality, that NASA resolved to build just such a space telescope. They named it Hubble. This was one of the most ambitious missions ever conceived. The technical challenges were enormous and it took 12 years to design and build. Travelling at seventeen thousand miles an hour, the Hubble Telescope would take pictures of the furthest reaches of space, transmitting them 400 miles back to Earth. In April 1990 the Hubble Space Telescope was launched. But just weeks later, disaster struck - the $2 billion telescope had a fatal flaw in its main mirror. This was not just a disaster for NASA; it was a national scandal. Hubble had to be saved; scientists and engineers began to search desperately for a solution to the problem. Plans for an adventurous repair mission began to take shape but it was two years before work could be carried out. It took astronauts five gruelling space-walks to carefully replace the instruments and patch up the telescope. But nobody knew if Hubble would be able to deliver on any of its original promises. Finally, the miracle happened. An unexpected avalanche of data from Hubble confirmed that the telescope was fixed. At last it began to solve the most fundamental puzzles of the Universe. Hubble has given us breathtaking images of the birth of stars; it has found black holes swallowing matter at the centre of galaxies; and last year the Hubble Telescope resolved the most fundamental question in astronomy - the age of the Universe. At last, half a century of scientific endeavour was rewarded. Horizon marks the 10th anniversary of the launch of the Hubble Space Telescope by tracing the extraordinary tale of triumph, disaster and eventual success of this unique window into the Universe.
Feb 10 2000
Hidden deep beneath the Earth's surface lie one of the most destructive and yet least-understood natural phenomena in the world - supervolcanoes. Only a handful exist in the world but when one erupts it will be unlike any volcano we have ever witnessed. The explosion will be heard around the world. The sky will darken, black rain will fall, and the Earth will be plunged into the equivalent of a nuclear winter. Normal volcanoes are formed by a column of magma - molten rock - rising from deep within the Earth, erupting on the surface, and hardening in layers down the sides. This forms the familiar cone shaped mountain we associate with volcanoes. Supervolcanoes, however, begin life when magma rises from the mantle to create a boiling reservoir in the Earth's crust. This chamber increases to an enormous size, building up colossal pressure until it finally erupts. The last supervolcano to erupt was Toba 74,000 years ago in Sumatra. Ten thousand times bigger than Mt St Helens, it created a global catastrophe dramatically affecting life on Earth. Scientists know that another one is due - they just don't know when... or where. Yellowstone National Park: It is little known that lying underneath one of America's areas of outstanding natural beauty - Yellowstone Park - is one of the largest supervolcanoes in the world. Scientists have revealed that it has been on a regular eruption cycle of 600,000 years. The last eruption was 640,000 years ago... so the next is overdue. And the sleeping giant is breathing: volcanologists have been tracking the movement of magma under the park and have calculated that in parts of Yellowstone the ground has risen over seventy centimetres this century. Is this just the harmless movement of lava, flowing from one part of the reservoir to another? Or does it presage something much more sinister, a pressurised build-up of molten lava? Scientists have very few answers, but they do know that the impact of a Yellowstone eruption is terrifying to comprehend. Huge areas of the USA would be destroyed, the US economy would probably collapse, and thousands might die. And it would devastate the planet. Climatologists now know that Toba blasted so much ash and sulphur dioxide into the stratosphere that it blocked out the sun, causing the Earth's temperature to plummet. Some geneticists now believe that this had a catastrophic effect on human life, possibly reducing the population on Earth to just a few thousand people. Mankind was pushed to the edge of extinction... and it could happen again.
Feb 03 2000
There is something so special about diamonds, and they are so valuable, that people have always been prepared to go to the most extraordinary lengths to find them. But how would we feel about the uniqueness of diamonds if it was possible to make one in a laboratory, just like the real thing, down to the nearest atom? In the last few years there has been a scientific race to do exactly this: to manufacture the perfect gem diamond. Today the dream is close to becoming reality. Science has finally found a way to replicate in a few days something that nature has taken millions of years to produce - diamonds. These man-made diamonds are so close to the real thing, that they have the same atomic structure as natural diamonds. Even the most sophisticated machines are finding it hard to tell the difference. More importantly, these diamonds can be made and sold at a profit. Synthetic diamond press: This is the story of the race to produce man-made gem diamonds, from the first faltering steps 50 years ago, to today's 'New Alchemists' in Russia who are using the latest science and technology to produce perfect synthetic diamonds in an array of colours and sizes. And it is the story of how this leap in diamond-making technology has forced De Beers to develop ever-more sophisticated detection equipment, trying to spot the synthetics, while the physical distinction between real and man-made diamonds becomes more and more blurred. Today there are alarm bells ringing at De Beers in Johannesburg. De Beers controls the world diamond trade. By buying up most of the world's uncut diamonds, the company can regulate supply to select dealers, increasing it in good years and reducing it in bad, to keep prices high. Every year 3 billion pounds worth of rough diamonds are distributed around the world for cutting and polishing. The diamond market survives on public confidence. Already De Beers spends a fortune trying to detect synthetic gems, and teach wholesalers and graders what the molecular differences are. But imagine if these synthetics had exactly the same properties as real diamonds, each atom in place, every manufacturing flaw removed, leaving something indistinguishable from the real thing. They would be undetectable. What would a real diamond be then? To many, the difference would be purely psychological. And so what would happen to public confidence in the natural diamond market? Man made diamonds: According to the new alchemists, this is all just about to happen.
Jan 27 2000
On a barren desert in South America lies one of the greatest archaeological puzzles in the world. Etched in the surface of the desert pampa sand are hundreds of straight lines, geometric shapes and pictures of animals and birds - and their patterns are only clearly visible from the air. They were built by a people called the Nasca - but why and how they created these wonders of the world has defied explanation. On the pampa, south of the Nasca Lines, archaeologists have now uncovered the lost city of the line-builders, Cahuachi. It was built nearly two thousand years ago and was mysteriously abandoned 500 years later. New discoveries at Cahuachi are at last beginning to give us insight into the Nasca people and to unravel the mystery of the Nasca Lines. Distorted heads The Lines were first spotted when commercial airlines began flying across the Peruvian desert in the 1920's. Passengers reported seeing 'primitive landing strips' on the ground below. No one knew who had built them or indeed why. Since their discovery, the Nasca Lines have inspired fantastic explanations. SpiderPerhaps most famously, the Austrian writer Erich von Danikken claimed that they were evidence that the earth had been visited by extra-terrestrials. The lines, he said, were runways for their spacecraft. Scientific study began in the 1940s with the arrival of a German mathematician and astronomer called Maria Reiche. She lived at Nazca until her death in 1998 and was known as the Lady of the Lines. Reiche believed that the lines were a sophisticated astronomical calendar. However, in 1965, astronomer Gerald Hawkins came to Nazca and used computers to check Reiche's theory. Hawkins could find no correlation between the lines and the stars. Giuseppe Orefici Italian archaeologist Giuseppe Orefici has been excavating the immense Cahuachi site for the last 17 years. Every year he brings a team of specialists to South America for three, intensive months of excavation. Horizon joined Orefici and his team in the hot, windy months of 1998 and this is a fascinating record of their extraordinary finds. Woven clothCahuachi is emerging as a treasure trove of the Nasca culture. As Orefici and his team excavate, discoveries of paintings on preserved pottery, and the ancient technique of weaving that the Nasca people developed, have given an insight into how the lines may have been made, and what they might have been used for, more than 1500 years ago. MummyMost exciting is the discovery of human remains. Stunningly preserved in the dry soil of the Peruvian desert are the mummified bodies of the Nasca themselves. Orefici's colleagues Brian Harrison and Andrea Drusini carry out modern autopsies on these remarkable finds, and reveal the strange world and rituals of the Nasca people. CahuachiOriginally believed to have been a military stronghold, Cahuachi is now reckoned to be a place of ritual and ceremony, and Orefici's stunning new evidence confirms this idea. Cahuachi is now revealed to have been abandoned after a series of natural disasters destroyed the city. But before they left it, the Nasca people covered the city in the arid pampa sand where, until recently, it has remained a barely visible mound in the desert.
Jan 20 2000
In this moving film Horizon follows the Loughran family in their fight to save the life of their daughter Sheila who suffers from cystic fibrosis. They lost their youngest daughter Ann to the disease in 1974 at the age of 15, and now as the health of their third daughter Sheila deteriorates, they must face the prospect of losing a second child. The current shortage of donor organs means that Sheila's only hope of survival is a rare and controversial operation that requires her two surviving siblings to undergo an arduous and potentially fatal operation. An X-ray of Shelia's lungs Cystic fibrosis (CF) is the most common genetic disease in this country and it is incurable. The lungs of people with cystic fibrosis become covered with a sticky mucus making them extremely susceptible to bacterial infection. Over time these infections badly scar the lungs, until eventually they stop functioning. The defective CF gene is harmless when only a single copy of the gene is inherited. However, both the Loughran parents carry the gene, giving any child they may have a 25% chance of being born with cystic fibrosis. In fact two of their four children were born with the condition. Horizon joins the family at a time when Sheila's health has deteriorated to such an extent that she requires oxygen 24 hours a day and has only months to live. Although on the waiting list for a donor lung, with 50% of patients dying while waiting to receive a transplant, Sheila's chances are not good. The family has become aware of a controversial new operation, pioneered in the UK by Professor Sir Magdi Yacoub at Harefield Hospital. The technique, known as Living Donor Lung Transplantation, would involve removing Sheila's diseased lungs and, in an extraordinary three-way operation, replacing them with a lobe from one of the lungs of each her two siblings. There have been six of these groundbreaking operations carried out in this country. However, only three patients have lived longer than a month. There is a clear moral dilemma - with such a low success rate, is it ethical to put the lives of two healthy people at risk? Even if the operation is initially successful it may only give Sheila five more years to live, by which time her new lungs are likely to fail again. Damian Loughran Sheila's brother and sister, Damian and Josephine, feel compelled to do anything they can to save their dying sister. They undergo stringent tests before being certain that they are compatible donors and fit for surgery. They will have to face the risk of haemorrhaging and infection, both of which could potentially be fatal. After the operation both donors will be left with a 20-25% permanent loss of lung function. Despite these dangers, Damian and Josephine remain determined to proceed. As all three of their children are wheeled in for the 12-hour operation, Mary and Harry Loughran's emotion is apparent. A day later, Sheila is breathing with her new lungs, but it is not long before complications arise. She is unable to absorb food and develops an abscess on her lung. Sheila is kept under sedation and so is unaware of these complications. Sadly, three weeks after the operation, Sheila loses her fight for life.
Jan 12 2000

Season 1999

13 Episodes

Horizon presents the extraordinary story of a beautiful mathematical formula that changed the world, the financial markets, and indeed capitalism itself. It could do the unthinkable - it took the risk out of playing the money-markets. To its inventors it brought the Nobel Prize for economics. To those who used it, it brought great wealth. But this glittering tale would end in tragedy.
Dec 02 1999
Horizon reports on a February 1999 catastrophic avalanche at Galtür in Austria that claimed 31 lives. Over the next six months, Horizon followed a team of scientists as they pieced together the extraordinary chain of events that led to the disaster. The scientists' investigations into the extreme forces of nature responsible for the tragedy are making people re-evaluate their calculations about avalanches.
Nov 25 1999
Could giant volcanic 'chimneys' on the ocean floor unlock the secret of how life began on Earth?
Nov 18 1999
Horizon presents a documentary about Multiple Personality Disorder (MPD) where in the 1980's, it suddenly became the talk of the town. Tens of thousands of Americans were diagnosed with an illness that was previously unheard of. A trigger for this sudden was the release of a film, "Sybil". Telling the dramatic story of a woman diagnosed with Multiple Personality Disorder, the film was shown across America making Sybil a household name.
Nov 11 1999
Dramatisation of biologist David Lack's struggle to reconcile scientific evidence for evolution with his belief in God.
Aug 01 1999
Skeleton Key 1999x08
In this report, Horizon investigates the rare disease called Fibrodysplasia Ossificans Progressiva, which causes muscles and ligaments to turn into solid bone. This disease causes severe disfigurement and suffering, and often-time death. We look at the research by scientists trying to find out the causes of the disease and how to find a cure.
Mar 25 1999
Horizon presents this documentary by scientists who have calculated that the Earth will be hit by a small asteroid within 50 years. How will this effect our planet?
Mar 18 1999
In this report, Horizon explores the arguments for and against the building of the Space Station Freedom and will it ever justify it's huge cost.
Mar 11 1999
Sudden Death 1999x05
In this Horizon documentary, we present Alfred Steinschneider's theory on cot death where gaps in breathing could be responsible for the death of many infants.
Feb 25 1999
Horizon presents a documentary looking at the United States heart specialist, Michael DeBakey, and his work and research into making miniature pumps which could help make permanent artificial hearts in the future.
Feb 18 1999
In this episode, Horizon reports from Africa on the effect that rising elephant numbers are having on humans and the natural environment.
Feb 11 1999
Pandemic 1999x02
Horizon looks at the knowledge gained following the Spanish Flu Pandemic of 1918.
Feb 04 1999
Horizon follows the hunt for the most distant star ever seen.
Jan 28 1999

Season 1998

18 Episodes

In this program, Horizon reveals how laughter and play are crucial to the development of the brain, and how some scientists are recommending play as an alternative to drugs in helping to treat hyperactive youngsters.
Nov 05 1998
Horizon presents an investigation into how Thalidomide is being used to treat leprosy, AIDS, and cancer with encouraging results.
Oct 29 1998
Horizon follows the work of various scientists attempting to turn back the biological clock.
Oct 22 1998
Mosquito! 1998x15
Horizon investigates how science is fighting against the mosquito-spread disease Malaria.
Oct 15 1998
Horizon tells the story of maverick scientist John Ostrom and his theory that birds are really just dinosaurs with feathers. Thirty years later, a revolution in palaeontology has proven him correct. Horizon looks at the compelling and recent evidence that shows how modern birds fine-tuned their unique design for flight. It also confirms that Velociraptor dinosaur is more closely related to the sparrow than it is to the crocodile.
Oct 08 1998
Horizon explores the history of experimentation with chimpanzees, our closest living relatives.
Oct 01 1998
Horizon series on the emergence of the new sex drug Viagra for men.
Sep 10 1998
Horizon examines claims that measures to protect American and NATO troops against chemical and biological weapons may have backfired.
May 14 1998
Magic Bullet 1998x10
Horizon brings the story of a 40 year struggle to bring 'Antisense' into being and it's current trials with incurable cancer patients.
May 07 1998
Horizon presents this documentary on how special effects have evolved during the last century of films.
Apr 30 1998
Mir Mortals 1998x08
This documentary by Horizon presents the story of the four Russian men who orbited earth last year on board the ill-fated Mir space station.
Apr 23 1998
In this story, Horizon looks at the communities that live directly below the shadow of the volcano called Mount Vesuvius.
Apr 16 1998
Overkill 1998x06
Horizon presents the story from Celtic ritual and forensic science with startling conclusions that emerge about the subject and the nature of the evidence itself.
Apr 02 1998
Horizon examines how much further we can and should go in our treatment of those born too soon in Britain.
Mar 26 1998
In this documentary, Horizon reports on the genetic research of biologist Mike Levine, whose discovery of a mutant fruit fly led to cures for illnesses as diverse as Parkinson's disease and skin cancer.
Mar 19 1998
Horizon presents the scientist, Graeme Mather, whose claims to be able to cause rainfall, are tested in Mexico with his reputation at stake.
Mar 05 1998
Horizon presents a documentary with Jonathan Miller who sets out for the Torres Strait, near Australia, to retrace the footsteps of the first British anthropological expedition 100 years ago. The expedition laid the foundations of modern anthropology's aims, ethos, and rules.
Feb 26 1998
After the 1991 Gulf War, a UN Special Commission was set up to go into war-torn Iraq, seek out Saddam Hussein's weapons of mass destruction and destroy or disable them. This remarkable Horizon follows the tension of the inspectors' every move as they track down secret military bases, Scud missile launchers, the infamous super-gun barrels, decaying chemical weapons dumps, and the remains of the nuclear research establishment, cunningly hidden amongst debris and the innocent-looking rubble of post-war reconstruction. At each stage in the cat-and-mouse game with the Iraqi security forces, the UN team had to draw on cunning and courage to force their way into secret locations. Day by day, they recorded their progress on video, and charted the tensions of diplomatic stand-offs as the world was twice drawn close to another violent confrontation in the Gulf. The courage of the UN team, drawn from scientists from all over the world, is graphically revealed as they attempt to gauge the lethal nature of rusting canisters of poison gas, at Saddam's decaying chemical weapons store. After the immediate rush of successes, the inspectors' work became a steady process of attrition - grinding on against the stonewalling of their hosts. "The weapons programme is like layers of an onion. Every now and then, Saddam would allow us to peel one back, but there is always more underneath." But five years on, the inspectors had still not tracked down proof of the darkest of Saddam's secrets: his biological weapons programme. However, painstaking detective work revealed that huge quantities of the media needed for growing biological organisms had been imported, and Iraq finally admitted to having substantial biological weapons, which are cheaper and more simple to produce than nuclear and chemical weapons, yet have the same destructive power. Gradually the inspectors got close to the labs and animal testing stations where the lethal toxins had been produced. In addition to the most common biological warfare organisms, anthrax and botulinus, Iraq developed and tested strains of viruses never before adopted for weapons purposes. This was part of an ongoing international biological arms race to design novel weapons using gene-splicing or fibroviruses such as Ebola, Hanta fever and others.
Feb 19 1998

Season 1997

15 Episodes

This Horizon documentary is about how and why, a sheep named Dolly, became the first cloned copy of an adult mammal.
Oct 23 1997
Looks at Ian Waterman, who at 19 caught a virus that destroyed half of his nervous system and who, in spite of medical assertions that he would never walk, feed or move again, managed by sheer will-power to get back some mobility. Examines the question of how far the brain can over-ride disease or physical problems.
Oct 16 1997
Horizon presents a documentary about scientists who now believe that viruses that can kill bacteria, known as bacteriophage, might win the fight against super-germs.
Oct 09 1997
Out of Asia 1997x12
In this episode, Horizon presents new findings about the dates for the arrival of people in Australia and the invention of art.
Sep 25 1997
Horizon reports on how mainstream science is now looking at whether the brain can affect the immune system.
Sep 18 1997
Horizon investigates the theory that a comet impact in the Gulf of Mexico was responsible for the mass extinction of the dinosaurs.
Sep 11 1997
Horizon reports on the technical and logistical struggles of teams trying for the first time to circumnavigate the earth by balloon.
May 01 1997
Horizon investigates the real impact that oil pollution has on our environment during a 12 month study.
Apr 24 1997
Horizon reports on a radical new theory by Professor Polly Matzinger about the human body's immune system.
Apr 17 1997
In this episode, Horizon investigates an amazing new sign language developed solely by deaf children and explores if we copy language from what surrounds us.
Apr 03 1997
In this episode, Horizon reports on the last lab samples of smallpox destined to be destroyed. But do we still have much to learn from this virus?
Mar 27 1997
This episode of Horizon presents a profile of the inventor Sir Frank Whittle and his idea for the first jet engine which changed the nature of air travel.
Mar 20 1997
Shipwreck 1997x03
Horizon follows the investigations into the origins of a 16th century shipwreck discovered off of the coast of the Channel Islands.
Mar 13 1997
In this documentary, Horizon investigates obesity in Britain, following a woman, Heather Osborne, who weighs 322 pounds. We watch her progress through a stomach stapling operation and explore reports on a so-called fat free fat and two new drugs which have been marketed as the ultimate cure for obesity.
Mar 06 1997
Horizon reports on the resurgence in research on psychedelic drugs in the 1990's.
Feb 27 1997

Season 1996

16 Episodes

Noah's Flood 1996x16
Follows the work of geologists Bill Ryan and Walter Pitman, who for twenty five years have been investigating evidence for the location of the biblical flood and Noah's Ark.
Dec 16 1996
An investigation into claims by researchers that time travel is not only theoretically possible but is already happening.
Dec 02 1996
Living Death 1996x14
Looks at new treatments for patients in a persistent vegetative state. Focuses on the case of Geoffrey Wildsmith who was misdiagnosed as being PVS. He had awoken from his coma but was totally paralysed and unable to communicate. After two years he was transferred and it was found he could communicate by using a buzzer connected to a highly sensitive pressure-switch.
Nov 25 1996
An investigation into claims that life once existed on Mars. NASA scientists and their critics discuss the fossils discovered in a small meteoric rock in Antarctica earlier in 1996.
Nov 11 1996
In this documentary, Horizon compares the future of television with the years of experimentation before the first BBC broadcasts in 1936.
Nov 04 1996
Reports on the work by scientists Dr Keith Baverstock and Sir Dillwyn Williams to confirm that the outbreak of thyroid cancer in children in Belarus and the Ukraine was due to the Chernobyl disaster.
Apr 01 1996
In this episode of Horizon, which is a follow-up to the 1991 documentary, we follow a group of soviet scientists on a suicide mission as they search for the missing nuclear fuel inside the remains of the nuclear reactor 4.
Mar 25 1996
Follows astronomers from Manchester, Switzerland and California as they search for planets with liquid water on them, the prerequisite for life
Mar 11 1996
In this Horizon documentary, we look at the notion that each cell in our body is programmed to die. Understanding this concept has major implications for research into disease.
Mar 04 1996
Are changes in modern living increasing levels of oestrogen and threatening males of different species, from alligators to humans?
Feb 26 1996
Recounts the history of scientific attempts from Marconi onwards to understand the atmospheric layer, known as the ionosphere. Discusses interest shown by the US Military in the region which has led to the establishment of HAARP (High Altitude Auroral Research Project) which will beam energy directly into the ionosphere.
Feb 12 1996
Follows two teams of researchers, in Britain and USA as they use radically different genetic techniques in the race to find an effective treatment against cystic fibrosis.
Feb 05 1996
Follows a group of biologists Conservation International who take a pragmatic approach to what species can be saved.They travel to the Bolivian rainforest to assess missing species.
Jan 29 1996
Examines the latest research aimed at conquering cancer. Includes research into vaccines for prostate cancer and skin cancer.
Jan 22 1996
Tells the story of mathematician Andrew Wiles who has made it his life's work to solve the puzzle of Fermat's last theorem that has baffled minds for three centuries.
Jan 15 1996
Investigates the case of the "Boxgrove Man". Follows archaeologist Mark Roberts who tries to piece together the history of the first Englishman, from a shin bone nearly 500,000 years old, discovered in Boxgrove in Sussex.
Jan 08 1996

Season 1995

20 Episodes

Horizon presents the story of the search for an explanation of how rock can flow like water.
Dec 11 1995
This report by Horizon brings you the latest research into the battle agains the AIDS virus.
Dec 04 1995
Horizon looks at an attempt to crack the mystery of smell by designing a molecule whose odour can be detected.
Nov 27 1995
Horizon presents an update on the story about asteroids colliding with Earth some day.
Nov 20 1995
Nanotopia 1995x16
This episode of Horizon is about the future of micro-technology. In 1959, noted American physicist Richard Feynman offered a $1000 prize to anyone who could build an electronic motor no larger than half a millimetre on any side. He awarded the prize within eight months. Today, some scientists predict the imminent development of molecular computers the size of specks of dust. This program examines that and other technical possibilities, as it takes viewers on a guided tour of the cutting-edge laboratories of nanotechnology. There, scientists working on similarly astounding projects offer their predictions about future technological developments. Discussions include how nature provides scientific inspiration. Detailed scientific models and sophisticated computer graphics illustrate how these new micro-technologies will work.
Nov 13 1995
Horizon investigates the controversial research into some birth control contraceptives.
Nov 06 1995
Liar 1995x14
Horizon presents a documentary that reveals the role played by deception in society and the effort by science to weed out the truth and the controversy over the accuracy of the polygraph test.
Oct 30 1995
Horizon explores the phenomenon often regarded as the first sign of madness - hearing voices. The report describes how the work of a leading Dutch professor of psychiatry, Marius Romme, has influenced psychologists and psychiatrists in Britain to rethink their current definitions of madness.
Apr 24 1995
Horizon tries to answer the question, "Has the dream of earthquake prediction finally been shattered?"
Apr 10 1995
This episode of Horizon reveals the results of research that could explain the major reasons for so many complications during pregnancy.
Apr 03 1995
The I-Bomb 1995x10
Horizon presents this documentary on how national power is moving into the hands of those who control information.
Mar 27 1995
Icon Earth 1995x09
This Horizon episode is about the Earth as an icon.
Mar 20 1995
Horizon has uncovered disturbing evidence of the fabrication of scientific research results.
Mar 13 1995
Exodus 1995x07
Horizon follows the a six month study of the world's first Environmental Impact Assessment team as they study the implications for the environment for major environmental events such as in Tanzania, when in April last year, nearly half a million people set up home in the refugee camp of Benaco.
Mar 06 1995
Horizon brings you the recent discovery of the real Venus as space probes, like the Magellan, shattered previous existing concerning its geology.
Feb 27 1995
Horizon investigates whether the human growth hormone is really the new wonder drug of the 21st century.
Feb 20 1992
Horizon presents the story of a pair of Siamese twins and the surgery they underwent to try and separate them.
Jan 30 1995
This episode of Horizon explores collections of the bones of thousands of Native American Indians in museums and universities across the United States.
Jan 23 1995
Horizon follows an expedition from Russia's most advanced oceanographic exploration ship on a mission to clean-up and prevent radioactive contamination of the ocean by one of Russia's sunken nuclear submarines.
Jan 16 1995
Horizon presents a documentary on the ideas of Maureen Raymo's thesis on what triggered the last ice age.
Jan 09 1995

Season 1994

21 Episodes

Horizon brings you Reports from Europe, America, and Australia on how wine making differs and asks whether the traditional and troubled European wine industry will have to change its methods to compete with those wines from the new world.
Dec 19 1994
Horizon presents a documentary on Synaesthesia which is an unusual disorder of perception in which barriers between the senses dissolve.
Dec 12 1994
Horizon investigates some alleged reports of alien abductions.
Nov 28 1994
The Predator 1994x18
Horizon presents a documentary on the Partula, a Polynesian tree snail.
Nov 21 1994
Horizon explores the creative process that caused ripples in the universe after the "Big Bang". Three teams of scientists attempt practical experiments to test abstract theories of cosmology.
Nov 14 1994
Horizon investigates how mankind is now polluting the world's oceans with extreme noise caused by many sources such explosions and super tankers.
Nov 07 1994
Ulcer Wars 1994x15
Horizon reports on a new discovery where stomach ulcers caused by Bacterium Helicobacter Pylori are treatable with antibiotics.
May 16 1994
This Horizon documentary investigates newly discovered documents in Moscow from 1945 about German concentration camps.
May 09 1994
Horizon explores how the demands of a 24-hour culture pushes people too far and the many accidents caused by fatigue.
Apr 25 1994
This episode of Horizon investigates the flooding of the Mississippi river in the USA and a massive flood in Bangladesh.
Apr 18 1994
In this episode, Horizon presents Professor Sir Walter Bodmer who searches for a new history of Britain, one that is written in their genes.
Mar 28 1994
Horizon examines the continuing, bitter controversy over the claim that nuclear fusion has been produced in a test tube.
Mar 21 1994
Horizon explores scientific discoveries made in extraordinary ways.
Mar 14 1994
This Horizon episode follows the rescue and repair mission carried out by the shuttle astronauts on the Hubble Space Telescope.
Mar 07 1994
In this documentary, Horizon tries to answer the question if "Star Wars" technology could be used to destroy meteors big enough to threaten life on earth.
Feb 28 1994
Horizon reports on a team investigating the mysterious disappearance of an airliner in 1992 that was flying over the Panamanian jungle.
Feb 14 1994
In this report by Horizon, we look at a type of cancer which cured itself. The cancer cells were killing themselves and finding out why may revolutionize future cancer treatment.
Feb 07 1994
Genie 1994x04
Horizon brings you the story about a 13 year old girl who had lived most of her life tied up in the back room of her parent's house since the time she was born.
Jan 31 1994
This is a Horizon episode that attempts to answer the question, "What is a mind?" and how does your brain create it? Gerald Edelman thinks he has the answer.
Jan 24 1994
This Horizon documentary explores theories about the reasons for the extinction of mammoths including those which survived on the Island of Wrangel.
Jan 17 1994
Horizon brings you the international campaign to frame the laws of war by limiting the design and use of weapons aimed at "soft targets".
Jan 10 1994

Season 1993

21 Episodes

Horizon investigates how life began on Earth. Did it evolve on land surfaces on Earth, in the sea, or in space?
Jun 28 1993
Chimp Talk 1993x20
This documentary by Horizon looks back into the 1980's where the work of pioneer researchers trying to determine if chimpanzees could understand language was attacked as charlatanism. Now the public opinion has moved back in favour of the idea that apes can indeed talk to us. The program looks at the latest developments in the chimpanzee language laboratories in America.
Jun 21 1993
Horizon describes how researchers discovered that a lethal gas, called nitric oxide, was behind some of the most basic functions of our bodies.
Jun 14 1993
In this story, Horizon explores the endless stream of digital information available on demand to the public, but do we need, or even want it?
Jun 07 1993
Horizon looks at causes of violence and asks psychologists to interview men and boys with a record of violence.
May 24 1993
In this episode, Horizon examines Asthma, the illness that is the most common condition of the developed world.
May 10 1993
Horizon reports on scientists who are planning smart aircraft wings and smart buildings that can sense earthquakes.
Apr 19 1993
Follows a team of archaeologists led by Michael Novacek as they try to retrace the steps of an expedition launched by the American Museum of Natural History in the 1920's. The original expedition sought the origins of humanity but instead came across a virtual graveyard of the dinosaurs.
Apr 05 1993
Horizon presents the story of a robot named Dante, who goes into an active volcano in Antarctica to find out if volcanoes contribute to the ozone hole in our atmosphere.
Mar 29 1993
In this episode, Horizon examines the latest scientific evidence about the Dead Sea Scrolls.
Mar 22 1993
Horizon shows how American scientists struggled to fulfil the dreams which challenged fundamental scientific laws.
Mar 15 1993
This is a Horizon update to the story of the Stone Age man found frozen in an Alpine glacier in 1991.
Mar 08 1993
This documentary by Horizon looks at how the Hubble space telescope is uncovering evidence of black holes in our distant galaxies.
Mar 01 1993
This Horizon documentary looks at how the ancient Egyptians built the pyramids without the use of the wheel, ramps, or levers.
Feb 22 1993
Horizon investigates how market research, opinion polls, TV ratings, and consumer surveys have got it disastrously wrong. Commercial decisions depend increasingly on this information, but just how good is that information?
Feb 15 1993
Mars Alive 1993x06
This Horizon episode attempts to answer the question if it will be possible to 'terraform' Mars by creating a new atmosphere, and then adding water and plants to make the planet habitable.
Feb 08 1993
This is the second part of a two-part Horizon series presenting a portrait of Richard Feynman, the American Nobel Prize winning physicist.
Feb 01 1993
This is the first part of a two-part Horizon series presenting a portrait of Richard Feynman, the American Nobel Prize winning physicist.
Jan 25 1993
This Horizon episode is about the new and terrible threat from tuberculosis which kills more people than any other infection.
Jan 18 1993
Horizon investigates the current benefits and disadvantages of Hormone Replacement Therapy (HRT).
Jan 11 1993
Horizons presents a report on a daring Swedish operation that transplants foetal tissue into the brains of Parkinson's disease sufferers.
Jan 04 1993

Season 1992

19 Episodes

Genes R Us 1992x19
This Horizon program looks at the stereotyped image of the scientist.
Jun 15 1992
Horizon presents the current evidence of a massive sporting fraud in the former Eastern Germany that has now been uncovered. The evidence shows that the East German Olympic success through the 1980's was due in part to the sophisticated use of drugs, a practice which the East German state endorsed.
Jun 08 1992
Horizon brings you this report to explain when animal communities exceed carrying capacities of their environments, they crash spectacularly. Will this also happen to humans?
Jun 01 1992
In this story, Horizon presents an investigation into the research to make livestock and poultry grow bigger and stronger.
May 18 1992
Horizon investigates the claims by rival American and French scientists as to who first discovered the HIV virus.
May 11 1992
Iceman 1992x14
Horizon reports on the investigation into a well-preserved human corpse found frozen in an Alpine glacier.
Apr 27 1992
In this report, Horizon presents that scientific observations have shown that the landscape is constantly moving.
Apr 13 1992
Before Babel 1992x12
Horizon explores the development of languages all over the world and attempts to reconstruct the first spoken words.
Apr 06 1992
Horizon presents a story about what a women eats before and during pregnancy can determine the diseases her children may suffer from later in their life.
Mar 30 1992
This episode of Horizon is about how nuclear fusion has been heralded as the power of the future with the promise of clean affordable energy.
Mar 16 1992
Horizon presents the life and work of mathematician Dr. Alan Turing.
Mar 09 1992
This episode of Horizon looks at Britain's science spending and how it is falling behind it's competitors.
Mar 02 1992
Horizon investigates how in 1939, the Nazis led the race for the atomic bomb. Did scientific errors rob Hitler of a victory over the allies?
Feb 24 1992
Horizon follows five teams of scientists on the island of Mauna Kea in Hawaii as they wait for a solar eclipse.
Feb 17 1992
In this episode, Horizon look at attempts to persuade major respected organizations to do controlled trials on a synthetic malaria vaccine.
Feb 03 1992
Horizon explores the ecological track record of the North American Indians.
Jan 27 1992
About the original discovery in 1985 of a third form of solid carbon, named Buckminsterfullerene after the architect who invented geodesic domes. The two scientists who discovered the material glimpsed it for brief seconds only in their lasers but neither they nor other scientists subsequently could make the substance last long enough in the laser to prove their theory. Then in 1990, a couple of physicists with an arc-welder in a bell-jar found they could make as much Buckminsterfullerene as they liked, and industrial applications opened up, with talk of new polymers, molecular ball-bearings, lubricants and super- conductors. Meanwhile, the original discoverers were turning back to the fundamental questions surrounding the discovery, such as how and why does it form; does it exist in space or is it the solution to one of the great mysteries of the universe.
Jan 20 1992
Pest Wars 1992x02
Horizon examines the advantages and disadvantages of biological pest control.
Jan 13 1992
Horizon presents a new study that has highlighted the case of breast cancer.
Jan 06 1992

Season 1991

23 Episodes

Considers some of the different theories surrounding the Tyrannosaurus Rex dinosaur, and other members of the same family, and shows how calculations about size, speed, weight, etc. are made from skeletons, some of them recently discovered in Montana. Scientists also use the latest x-ray/scanning techniques to examine skulls and bones for information.
Jul 01 1991
Horizon examines the social and scientific issues around the cholesterol debate.
Jun 24 1991
In this Horizon episode, we look at the problems facing the Carl Zeiss optics company of Jena and other companies in the scientific sector of the former Eastern block countries. Following the reunification of Germany and the end of the Cold War, harsh economic conditions and the lack of scientific progress over the preceding decades in particular are explored.
Jun 17 1991
This story by Horizon looks at the expanding and controversial area of "smart drugs".
Jun 10 1991
Several astronomers and scientists explore the concepts of "hot/cold dark space" and whether or not the "Big Bang" theory is actually correct, as well as considering the structures of galaxies.
Jun 03 1991
Horizon explores the Camelford disaster, in which aluminium sulphate was accidentally added to drinking water in Cornwall in 1988.
May 20 1991
In this report, Horizon follows a group of eminent scientists who believe we have become too complacent about infectious diseases.
May 13 1991
Horizon presents a documentary on how virtual reality can make humans feel as if they are present in the computer simulated artificial world. What is the future of all this powerful, seductive technology?
Apr 29 1991
Documentary following the clean-up operation at Chernobyl and the elite team of Soviet scientists working in areas of radiation that would be considered lethal in the West, whilst they hunt for missing fuel, uranium and plutonium, anxious that these could cause a second accident.
Apr 22 1991
Horizon looks at archaeologist's new theories surrounding the population of the New World over 11,000 years ago
Apr 15 1991
Horizon examines the problems and cartography involved in mapping mountains such as Mount Everest. They follow the history of of mapping from those surveys conducted by mountaineering expeditions and early explorers, to modern mapping techniques using planes and satellites. Horizon also considers the startling news that K2 may actually be the world's tallest mountain according to recent satellite calculations.
Mar 25 1991
This episode of Horizon explores the Natural History Museum and its philosophy, both past and present. We look at some of the recent innovations that have been introduced in the past few years. The recent director of the museum, Dr. Neil Chalmers, justifies his policies, restructuring, and the academics. The scientists, who are adversely affected by the policies, air their own worries and concerns.
Mar 18 1991
This Horizon episode considers the pros and cons of "ecotourism" and the effects of tourism on the environment. The coral reefs of areas of Belize are suffering already from the effects tourists coming to the area. Rain forests and ape sanctuary areas employing the local community are also becoming a danger to the delicate environments.
Mar 11 1991
This Horizon interview presents Dr. Ulysses Seal who believes the "frozen zoo" concept is the best way to save vanishing species for the future generations.
Mar 04 1991
Looks at the phenomenon of the outbreaks of a lethal kidney disease amongst groups of people scattered around an area of the Balkans, covering Yugoslavia, Romania and Bulgaria, over the past 30 years.It considers the attempts and theories of scientists from all these countries over the years to find the cause of the disease.
Feb 25 1991
This episode of Horizon examines 20 years of research which has led to a new theory on how the earth's crust was made.
Feb 25 1991
This Horizon documentary presents the US auto industry's response to clean-up the air in Los Angeles, California by the year 2007.
Feb 11 1991
Looks at the work of Earthwatch, and some of the many people who spend their holidays contributing to learning about the planet by helping on prehistoric digs, recording fish noises, tracking rodents, measuring grass an leaves and counting insects in places all over the world, often suffering much discomfort and boredom.
Feb 10 1991
Horizon follows astronomer's efforts to rescue the Hubble space telescope and restore its original planned performance.
Feb 04 1991
Horizon reports on the new arms verification industry emerging due to the new arms control treaties.
Jan 28 1991
Horizon investigates the case against passive smoking and reveals new evidence of its danger.
Jan 21 1991
This Horizon episode tells the story of the top secret experiments carried out to test the effects of mustard gas.
Jan 14 1991
Sudden Death 1991x01
Documentary considering the nature of sudden death, the effects of coronary heart disease and the part they play.
Jan 07 1991

Season 1990

20 Episodes

Horizon investigates new breakthroughs in the scientific study, analysis, and reproduction of cells and their compounds, which may lead to the development of a cure for the AIDS virus.
Jun 25 1990
Horizon examines the possibility of scientists, either intentionally or unintentionally, creating living forms which could enjoy an independent existence, initially confined to computers and telephone networks, and in the form of computer viruses.
Jun 11 1990
Horizon investigates how teenage pregnancy is now posing massive health and social problems in many societies.
Jun 04 1990
This episode of Horizon is about BSE transmitted in cattle feed and causing the fatal Creutzfeldt-Jakob syndrome in humans.
May 21 1990
Horizon looks at the area around Mt. St. Helens 10 years after the volcanic eruption that devastated more 500 square kilometres of forest land in just minutes.
May 14 1990
This Horizon documentary looks at the radical transformations in the Singapore society as its technology extends into monitoring, logging, and linking up all businesses, information, and aspects of life on computer systems. The country's ultimate plan is to link the entire population electronically through the world's most advanced videotext system called Teleview. The report raises the question of what type of society this may create and also the political implications of such a system.
Apr 30 1990
What can we learn from insects? Professor James Gould explains on Horizon that the human society may be able to predict their own future based on the society structure of ants and bees.
Apr 23 1990
In this episode, Horizon looks at the Hubble space telescope, hailed as the greatest advance in astronomy since Galileo.
Apr 09 1990
Horizon presents the real story of seismic neglect and the failure of the San Francisco city government to protect its citizens.
Apr 02 1990
Cold Fusion 1990x11
This story by Horizon investigates cold fusion
Mar 26 1990
Horizon investigates how British scientists have begun to experiment to predict the effects of a changing climate from Greenhouse gases.
Mar 19 1990
Hurricane! 1990x09
Horizon explores the inside of Hurricane Gilbert as it neared Jamaica on a direct course for the United States.
Mar 12 1990
Horizon reports on how America has chosen to bury all of its most lethal radioactive waste under Yucca mountain in the state of Nevada.
Mar 05 1990
Horizon brings you a documentary on embryology - the branch of biology that studies the formation and early development of living organisms from the moment of conception.
Feb 19 1990
Horizon looks at the potential implications of genetically engineering plants.
Feb 12 1990
This report by Horizon presents the Voyager space probe close up encounter with the planet Neptune.
Feb 05 1990
In this Horizon documentary, we look at how NASA launched the Voyager space probes to explore the planets of the outer solar system.
Jan 29 1990
Horizon examines the history of research into irradiated food.
Jan 22 1990
Horizon reports on medical developments in Britain which could mean by the year 2000, health care will be very different.
Jan 15 1990
Oil Spill 1990x01
After the Exxon Valdez oil spill in 1989, Horizon looks at tanker design and the technology used for dealing with major oil slicks.
Jan 08 1990

Season 1989

20 Episodes

In this Horizon episode, we look at the effects on the climate from volcanic eruptions.
Jun 26 1989
In this story, Horizon explores how the destructive patterns of child abuse and depression can be broken by concentrating on the mothers of young children.
Jun 19 1989
Horizon presents a profile of noted inventor Clive Sinclair with his family and colleagues reminiscing and analysing his successes and failures.
Jun 12 1989
Horizon follows J. Hooper, a diabetic, as she explores various aspects of biosensor technology.
May 22 1989
Crash 1989x16
Horizon investigates how many of the tragedies on our roads in Britain could be avoided by the introduction of technical and legislative changes.
May 15 1989
Jubilee 1989x15
How valid have been Horizon's criticisms of scientific orthodoxy and to what effect have the programs had?
May 08 1989
This is a Horizon documentary about an investigation into the so-called "sick building syndrome" where occupants contract illnesses because of the environment within the building.
Apr 24 1989
Horizon presents a biography of the philosopher Ludwig Wittgenstein who lived from 1889 to 1951.
Apr 17 1989
Horizon explores three types of alternative medicine; homoeopathy, acupuncture, and diagnosing food allergies by testing your toes.
Apr 03 1989
This Horizon report covers the Tasaday, a remote Philippine tribe apparently living in the stone age, who are now seen as a hoax. How did they do it?
Mar 20 1989
Horizon covers the story of the Nottingham psychiatrists who study the human race to see who is mostly likely to develop schizophrenia.
Mar 13 1989
Concerto 1989x09
This documentary by Horizon investigates new technology applied to music.
Mar 06 1989
In this episode, Horizon presents an investigation into the state of medical research in neurological disorders and the issues with its funding in Britain.
Feb 27 1989
Horizon brings you an interview with Prof. Eric Laithwaite who presents an engineer's personal view of nature and how new inventions already exist in nature.
Feb 20 1989
Horizon answers the question: What are the alternatives for the elderly in Britain who can't live at home, or in a rest home or nursing home, or part of a sheltered accommodation?
Feb 13 1989
Horizon looks at the damaging effects of pollution and tourism on the Swiss Alps in Europe.
Feb 06 1989
This documentary by Horizon demonstrates how smart Weapons use computers to destroy targets, that until now, were only able to be threatened by nuclear weapons.
Jan 30 1989
In this episode, Horizon presents evidence that even diving in relatively shallow waters can cause serious long term damage to the brain and spinal cord.
Jan 23 1989
Horizon reports on the abnormally high incidence of and the early onset of diseases such as senile dementia and Parkinson's disease on the island of Guam in the Pacific. Scientists have now linked the diseases to a poison in the native cycad fruit.
Jan 16 1989
Horizon looks again at the Human Genome Project which aims to decipher or sequence all genes.
Jan 09 1989

Season 1988

25 Episodes

Richard Feynman was not only an iconoclastic and influential theoretical physicist and Nobel laureate but also an explorer at heart. Feynman through video recordings and comments from his friend and drumming partner Ralph Leighton tell the extraordinary story of their enchantment with Tuva, a strange and distant land in the centre of Asia. While few Westerners knew about Tuva, Feynman discovered its existence from the unique postage stamps issued there in the early 20th century. He was intrigued by the unusual name of its capital, Kyzyl, and resolved to travel to the remote, mountainous land. However, the Soviets, who controlled access, were mistrustful, unconvinced that he was interested only in the scenery. They obstructed his plans throughout 13 years. The majority of the scenes are extended narratives by Feynman. There is included a delightful extended discussion and demonstration of Feyman's bongo playing. Feynman explains how he used a phrase book of the Tuva language to write and express an interest in visiting there. The proposed trip took years to arrange. The programme never does get to show Feyman in Tuva; he died of abdominal cancer a few days after the recorded interview, at age 69 in February 1988. The story is interspersed with earlier recorded conversations by Feynman that add his perspectives on the nature of physics. So, this is not a travel documentary at all; rather it is another fascinating insight into the exciting personality of Richard Feynman. "You have no responsibility to live up to what other people think you ought to accomplish." - Richard Feynman (1918-1988).
Jul 04 1988
Believe Me 1988x24
Horizon brings you a report on Myalgic Encephalomyelitis which is a neurological disease that has been puzzling doctors for more than 30 years.
Jun 27 1988
This Horizon episode presents the breakthroughs in superconductivity research in several countries.
Jun 13 1988
A Good Test? 1988x22
Horizon investigates the use of psychological techniques in job recruitment and career development.
Jun 06 1988
This report by Horizon covers how the electronic revolution in television news affects the way it is gathered, edited, and presented.
May 23 1988
Horizon interviews the scientist and Nobel prize winner, Peter Medawar.
May 16 1988
In this documentary, Horizon explores how to solve murder cases with the help of new technology.
May 09 1988
Horizon investigates if changes in lifestyle could reduce the risks of cancer.
May 02 1988
Horizon presents part three of a three-part series on the education of doctors in Britain. In this episode, a group of medical students are followed from the beginning of their third year of medical education up to the point where they meet patients for the first time.
Apr 25 1988
Horizon presents part two of a three-part series on the education of doctors in Britain. In this episode, we examine the first two years of education at St. Mary's Medical School and at the exams that have to be passed.
Apr 24 1988
Horizon presents part one of a three-part series on the education of doctors in Britain. In this episode, we look at the ordeal of an interview faced by two potential students applying to St. Mary's Medical School.
Apr 23 1988
This is part two of a two-part Horizon series about the mystery of Easter Island, the stone statues, and the civilization that erected them.
Apr 18 1988
This is part one of a two-part Horizon series about the mystery of Easter Island, the stone statues, and the civilization that erected them.
Apr 11 1988
Horizon looks at the progress of two heart disease patients at Montreal's Royal Victoria Hospital in Britain.
Mar 28 1988
This is part two of a two-part series by Horizon reporting on a military exercise code named Purple Warrior which is designed to test lessons learned during the Falklands war.
Mar 14 1988
This is part one of a two-part series by Horizon reporting on a military exercise code named Purple Warrior which is designed to test lessons learned during the Falklands war.
Mar 07 1988
Horizon looks at the experimental treatment of four cancer patients in the USA who have volunteered to try the LAK/Interleuken 2 treatment.
Feb 29 1988
Thinking 1988x08
Explores the limits of digital computers and artificial intelligence. Includes the views of John Searle, a philosopher at the University of California who refutes the claims for 'thinking' machines.
Feb 22 1988
This is a Horizon report on Britain's air traffic control capabilities and the use of outdated and unreliable equipment.
Feb 15 1988
This documentary report by Horizon examines the devastating effects of the Greenhouse Effect (earth's temperature rising) and how man is causing it.
Feb 08 1988
Horizon investigates how those who are born into a working class family are at greater risk of dying early than if born a child of the professional classes.
Feb 01 1988
This episode of the Horizon explores the Panama Canal, now a billion dollar commercial sea crossroad between continents. The future of the canal is in danger because of damage to rain forests.
Jan 25 1988
In the report by Horizon, they looks at manic depression and how is now known that it has a strong genetic component.
Jan 18 1988
Horizon documents the first sighting of a star in supernova at its initial stages. The study of the spacial event provides fascinating insight into the life of our own universe.
Jan 11 1988
This episode of Horizon looks at a new approach that holds hope for the treatment of Parkinson's Disease.
Jan 04 1988

Season 1987

23 Episodes

Janice Blenkharn's mother died of Huntington's Chorea, which any child of a victim has a 50-50 chance of inheriting. Janice is faced with the choice of having a test, developed after research in South America, to see if she has this incurable genetic disease.
Jun 29 1987
Report on the evolution of laser light technology for communication in the 21st century, with a dramatised account of the effect of the technology on our daily lives.
Jun 22 1987
Report on the future and commercial benefit of research into astronomy conducted by the Royal Greenwich Observatory and other scientific institutions in Great Britain.
May 15 1987
Report on research into rheumatoid arthritis.
Jun 08 1987
Report on the need for improved safety features on airplanes in particular the desirability of smoke hoods, plus an interview with a survivor of the 1985 Manchester aircrash.
Jun 01 1987
Discussion of the Anthropic Principle, a scientific theory for man's place in th e Universe.
May 18 1987
James Gould, Professor of Biology at Princeton University, lectures on the mating habits of animals and humans.
May 11 1987
Life Story 1987x16
Dramatisation of the race at the University of Cambridge in 1951 for the discovery of DNA.
Apr 27 1987
Report on the safety of UK nuclear power stations, following the accident at Chernobyl in the USSR in 1986. The programme focuses on the nuclear installation at Hartlepool on Teeside, which has the smallest evacuation zone in the western world.
Apr 13 1987
Trial Babies 1987x14
Report on the different tests done on pregnant women to detect abnormalities in the foetus, with investigation of why these tests are not available in all pregnancies.
Apr 06 1987
Report on two sufferers of visual agnosia. The condition affects their ability to impose order on the visual world, even though they are not blind, but it does reveal a great deal about normal perception.
Mar 30 1987
Report on the research into volcanoes by British scientists Professor Geoff Brow n and Dr. Hazel Rymer, who have developed a technique of exploring the magma chambers of volcanoes and predicting when they will erupt.
Mar 23 1987
Engineer Henry Petroski explains why engineering can never be an exact science and looks at examples of engineering failures.
Mar 16 1987
Documentary on the increasing pressure put on the British police resulting in stress and psychological disorders, and also on the work of Dr. Douglas Duckworth, a psychologist at Leeds University who has worked with the police on these problems.
Mar 09 1987
Report on the development of the AIDS virus, and current research into vaccines to combat the disease.
Mar 02 1987
Documentary on the Osprey in north east America, where its natural habitat was being damaged by the use of DDT, but after some conservation work the Osprey is returning to the area.
Feb 23 1987
Report on exploration into releasing energy sources which came from outer space during the formation of the earth, 4,500 million years ago, and have lain dormant under the earth's crust. In Sweden a five mile deep drill hole was made to unleash this energy.
Feb 16 1987
Two part documentary on psychologist Bruno Bettelheim and his work with emotionally disturbed children.
Feb 09 1987
Two part documentary on psychologist Bruno Bettelheim and his work with emotionally disturbed children.
Feb 02 1987
Astronauts and space shuttle designers talk about the risks of space flight, in the light of the space shuttle disaster of January 1986.
Jan 26 1987
In this interview by Horizon, zoologist Richard Dawkins investigates an attack on evolution by scientific creationists, based on the book of the same name by the famous zoologist.
Jan 19 1987
Report on how forensic scientists ae identifying individual victims amongst the people murdered by Argentina's military juntas, by examination and genetic testing of their remains.
Jan 12 1987
Report on research into biological body clocks, which can effect emotional and physical health and well-being.
Jan 05 1987

Season 1986

23 Episodes

In a unique project, Horizon follows a group of medical students into the next century.
Jun 30 1986
This is the second part of a two-part series on battered children.
Jun 23 1986
This is the first part of a two-part series on battered children.
Jun 16 1986
Horizon presents an interview with Prof. C. Renfrew as he questions the accepted wisdom about the origins of Stonehenge in England.
Jun 09 1986
In this episode, Horizon brings you Voyager's encounter with Uranus and the mysteries that are being relayed back to the scientists.
May 26 1986
Horizon presents a simple, but effective, cure for diarrea in young children; sugar and salt.
May 19 1986
This report by Horizon takes a look at the instinctive side of intelligence in animals that shows us that we owe more to instinct than we may care to think.
May 12 1986
Horizon researches how we acquire mathematical abilities in the first place.
Apr 28 1986
This is an interesting Horizon presentation on decoys that look and smell like cows to the tsetse fly who carry a disease fatal to farm animals.
Apr 21 1986
In the interview by Horizon, Richard Dawkins discusses selfishness and cooperation, arguing that evolution often favours co-operative behaviour, and focusing especially on the tit for tat strategy of the prisoner's dilemma game.
Apr 14 1986
In this documentary, Horizon reports on how doctors in America found that addicts using designer drugs developed Parkinson's Disease-like symptoms.
Apr 07 1986
Horizon looks at the virus that causes AIDS and the research into vaccines and drugs being developed to counteract the devastating disease of the immune system.
Mar 24 1986
Will the new strategies and weapons introduced because of the Falklands war be a match for the next generation of weapons? Horizon presents this documentary to answer that question.
Mar 17 1986
Horizon investigates the remarkable technological transformation of France over the last 25 years.
Mar 10 1986
This episode of Horizon documents leprosy in the USA and India with a focus on medical developments for it's cure and control.
Mar 03 1986
Horizon explores at the latest discoveries about just where modern man came from.
Feb 24 1986
Horizon investigates the truths of science and it's theories.
Feb 17 1986
This report by Horizon looks inside the airline cockpit and examines the alarming fact that 4 out of 5 crashes are caused by human error.
Feb 10 1986
In this episode, Horizon explores the question of when antibiotics were first developed it seemed infectious disease might be eliminated, so what has gone wrong?
Feb 03 1986
Horizon explores the myth about the discovery of the antibiotic penicillin.
Jan 27 1986
Bitter Cold 1986x03
Horizon presents a documentary on scientists who take themselves to Antarctica in 1980 to act as physical and mental guinea pigs.
Jan 20 1986
Genesis 1986x02
This Horizon episode is about the discovery of a molecular key which may literally unlock the mystery of life for all creatures.
Jan 13 1986
Horizon presents a documentary about how white racists and black victims of racism volunteered to spend time in an isolated house living and talking about their prejudices.
Jan 06 1986

Season 1985

15 Episodes

Horizon reports on the current medical treatment of Malaria and Leukemia.
Apr 29 1985
This Horizon documentary examines the Infra-Red Astronomical Satellite (IRAS) which has detected evidence of planetary systems around distant stars.
Apr 22 1985
Horizon examines a hypothesis that life itself manipulates the planet to enhance it's own survival.
Apr 15 1985
Horizon investigates how food allergy has developed from the 1950's to the present.
Apr 01 1985
This episode of Horizon looks at how the world's best special effects technicians create some of Hollywood's most spectacular film scenes.
Mar 25 1985
Careering On 1985x10
This is a Horizon follow-up report on the careers of seven British teenagers studying Science 'O' levels back in 1978.
Mar 18 1985
Eurekaaargh! 1985x09
Horizon brings you a report by Robert Symes who offers ten golden guidelines on how to be a successful inventor.
Mar 11 1985
This documentary by Horizon attempts to explain the advances in physics in the search for the ultimate equation that explains the meaning of life, the universe, and everything else in existence.
Mar 04 1985
This episode of Horizon is about the controversial policy in African nation of Zimbabwe of encouraging villagers to allow wild animals back onto their land.
Feb 25 1985
Horizon examines new military technology which will come to dominate the battlefields of the future.
Feb 11 1985
In this episode, Horizon explores the characteristics of left-handed people.
Feb 04 1985
This Horizon episode is about a hospital in the African country of Kenya where the medical staff tells of a new approach to health care among the Pokot tribe.
Jan 28 1985
Horizon looks at the way modern archaeologists extract information from a site dig.
Jan 21 1985
Horizon takes a look at consultant psychiatrists.
Jan 14 1985
Documentary about colour perception based on the theories of Dr. Edwin Land, which oppose the long-held three-receptor theory of colour vision
Jan 07 1985

Season 1984

22 Episodes

Supercharged 1984x22
Horizon presents a chronological history of the development of the racing car during the 15 years prior to World War II.
Dec 17 1984
Horizon attempts to explain some of the theories proposed by pure mathematicians over the ages.
Dec 10 1984
Ivan 1984x20
In this documentary, Horizon spends a week with a victim of Parkinson's disease and how he has to use considerable muscular effort in order to cope with day-to-day life.
Dec 03 1984
Horizon examines the concept and implications of a global village in Third World countries.
Nov 26 1984
Horizon documents the current medical research into finding new ways of repairing damage to the brain and the central nervous system.
Nov 19 1984
Horizon reports on the decline in the amount of gambling leading to a severe reductions in money to fund the scientific research in Britain.
Nov 12 1984
Horizon explores the behavioural patterns of sheep, cows, chickens, and pigs under both natural and intensive farming conditions.
Nov 05 1984
Horizon investigates the military bias of British scientific industries and the possible consequences if the bias continues.
May 07 1984
Horizon reports on new medical techniques to diagnose the inherited diseases; sickle cell anaemia and cystic fibrosis.
Apr 30 1984
Horizon presents the second part of a two-part documentary about Kenneth Bianchi, the Los Angeles Hillside Strangler, who was convicted of the murder of 12 women even though his defence was that he had no memory of the crimes.
Apr 23 1984
Horizon presents the first of a two-part documentary about Kenneth Bianchi, the Los Angeles Hillside Strangler, who was convicted of the murder of 12 women even though his defence was that he had no memory of the crimes.
Apr 16 1984
In the documentary, Horizon reports on the life of slime moulds and how they provides clues to cell differentiation.
Apr 09 1984
Horizon investigates the linguistic potential of non-human species.
Mar 26 1984
In this documentary, Horizon reconstructs a therapy session where a man imprisoned for incest meets his family for first time in two and one half years.
Mar 19 1984
Horizon presents a report on current research and trends in facial reconstructive surgery.
Mar 12 1984
Horizon investigates the life for various civilizations along the river Waveney in east Angola.
Mar 05 1984
Horizon presents this report on parasites, their life styles, and the diseases they cause in Third World countries.
Feb 27 1984
In this documentary, Horizon examines the work at an archaeological project in the Cusichaca Valley, Peru.
Feb 13 1984
Horizon examines the various ways of committing computer fraud and at the efforts to prevent it and preserve our privacy.
Jan 30 1984
This episode of Horizon looks at the role of scientists in agriculture throughout the Third World countries.
Jan 23 1984
Microworld! 1984x02
Horizon looks at the research advances in physics and technology of microelectronics.
Jan 16 1984
Jan 09 1984

Season 1983

24 Episodes

The Academy 1983x24
Horizon follows group of men and women going through basic training in Federal Bureau of Investigation (FBI) methods at the Academy in the United States.
Dec 12 1983
In this report, Horizon outlines the latest research into cancer with specific reference to oncogenes.
Dec 05 1983
Horizon presents this documentary on how Britain deals with its mentally ill criminal offenders.
Nov 28 1983
Horizon investigates today's research into earthquakes and the usefulness of the findings.
Nov 14 1983
Horizon examines how the government of China presents the "one child per family" population policy to the people.
Nov 07 1983
Looks at different ways of teaching a foreign language and contrasts them with the way babies and young children pick up their native language, without formal teaching.
Oct 31 1983
Horizon presents a discussion on the use of animals for experiments.
Oct 24 1983
This episode of Horizon features Prof. Stephen Hawking and how he copes with his severe disability, his scientific career, and his relationship with his students.
Oct 17 1983
This report by Horizon examines the experiments of Joseph Priestly on blood and oxygen in photosynthesis.
Oct 10 1983
Horizon investigates the current research into development and use of an artificial heart.
Oct 03 1983
n this documentary, Horizon investigates the power of the mind for psychic phenomena; telepathy, clairvoyance, precognition, and psychokinesis.
Sep 26 1983
In this report, Horizon looks at the spread of the AIDS virus in the United States and their search for the cause and cure of the deadly disease.
Apr 25 1983
In this episode, Horizon investigates the nuclear accident which took place in the United States at the Three Mile Island nuclear power plant during March 1979.
Apr 18 1983
Horizon looks at the mental problem of schizophrenia and how madness is medically diagnosed.
Apr 11 1983
Horizon presents a look at the current research into artificial computer intelligence.
Mar 21 1983
Hard Rock 1983x09
The Horizon episode is about the Carsington Aqueduct Scheme in Derbyshire, England, and the massive excavation problems encountered during construction.
Mar 14 1983
In this Horizon documentary, we look back at the event surrounding the near extermination of the North American bison (buffalo) in the 1880's.
Mar 07 1983
Horizon reports on the state of scientific research in Britain and the past blunders of the National Research Development Council.
Feb 28 1983
Horizon investigates the way girls and boys were taught science and related subjects at schools.
Feb 21 1983
In the Horizon documentary, we look new ways of using computers in classroom and to what effect computers in our schools will have in future.
Feb 14 1983
Horizon examines some of the effects that moderate amounts of alcohol can have on the body.
Feb 07 1983
Horizon brings you a report about the discovery of two new, and unimaginably short-lived, subatomic particles called "W" and "Z".
Jan 24 1983
Horizon presents a report by Dr. Alison Jolly who discusses the country of Madagascar, just off of the west coast of Africa. Madagascar's ecology and conservation programs are in conflict with most third world economies.
Jan 17 1983
Horizon investigates if Britain should build a United States designed nuclear power station that uses a pressurized water reactor at its core.
Jan 10 1983

Season 1982

22 Episodes

Documentary about the little known Yugoslav-American scientist Nikola Tesla, whose experiments with electricity and wireless foreshadowed the discoveries of Edison and Marconi. Some of his most spectacular experiments are recreated by the programme's presenter Robert Syme.
Dec 20 1982
Documentary on the discussions at the second UN Environment Conference,in London in 1982,illustrating the points made in the debates on the possible future of the planet.
Dec 13 1982
The Chopper 1982x20
Traces the evolution of the helicopter, using rare archive footage of early pioneering flights. Also examines the latest research within the industry, and, with the aid of graphics, produces a glimpse of the helicopter of the future
Dec 06 1982
An informal portrait of Prof. Ian McColl at work in Guy's Hospital, London, and in Kent. He discusses what makes a good surgeon; how he teaches his students to talk to their future patients; and how much a patient should be told about what is going to happen in the operating theatre.
Nov 29 1982
Oxford moral philosopher Jonathan Glover introduces some of the new developments in genetic engineering, looks at the future possibilities of human genetic engineering and outlines the ethical questions raised by these new techniques.
Nov 15 1982
Documentary which looks at the great advances in the performance of ante-natal operations on the human foetus and the implications of these technical facilities for patient and health services and allocation of resources to this sort of medicine.
Nov 08 1982
A look at current research into the causes and effects of divorce in the Western world.
Nov 01 1982
Documentary about acid rain. The effects of various forms of pollution caused by processes of everyday life, including the contamination of rain by the burning of coal and oil. Written by Jeremy Taylor.
Oct 25 1982
Documentary which looks at the phenomenon of the Unidentified Flying Object and the possible explanations behind their sighting and observation by mankind.
Oct 18 1982
Documentary which shows the human reproductive cycle from conception to birth, through the use of microscopic cameras within the human body.
Oct 11 1982
Documentary which looks at the outbreak of a new disease in Spain in 1981 which has affected 17,000 people, killing 300, and the confusion which remains as to its causes. Although adulterated olive oil sold by unscrupulous businessmen is thought to be partly to blame, no-one seems sure to what extent.
Apr 05 1982
Documentary which looks at the boom in private medicine in GB and at the effects of this on the National Health Service in the country.
Mar 22 1982
Examines the prospects for Japanese economic supremacy in the 1990s and asks whether Japan will be able to compete in the development of new technologies or whether it will continue to look to the West for technological innovation. Also considers whether the Japanese education system stifles creativity.
Mar 15 1982
The Victims 1982x09
Documentary which looks at the psychological effects of kidnapping and imprisonment on the victims,based on the psychological characteristics shown by former concentration camp victims 30 years after the end of their ordeal.
Mar 08 1982
An examination of the use of Depo-Provera in the Third World. The contraceptive is injected and prevents pregnancy for three months, but it is banned in the U.S. because of the risk of cancer. Looks at its use in Thailand.
Mar 01 1982
Documentary which looks at the way in which disease in the world fights back against modern scientific methods of controlling it, looking at the example of the eradication of Malaria from Sri Lanka, and recent measures to eradicate it again
Feb 22 1982
Documentary on the first recorded instance of genetic engineering being carried out on a human, when in 1980, Dr. Martin Cline from Los Angeles operated on a 21 year old Israeli girl in Jerusalem to renew her defective blood system by implanting human genes. The programme examines the difficult ethical and moral questions surrounding the field of genetic manipulation and looks at the future of gene therapy.
Feb 15 1982
Horizon documents how every one of us is owned and operated by other individuals; by hordes of hidden organisms.
Feb 08 1982
Horizon explores what might happen when fossil fuel sources are depleted.
Feb 01 1982
Documentary which looks at the wildlife of Pleasant Bay in New England marshland s of the Eastern USA, and their habitat.
Jan 25 1982
An examination of computer-based communication aids for the severely speech impaired. Follows the trip to America of Dick Boydell, a cerebral palsy sufferer without the power of speech. At the Artificial Language Research Laboratory in Michigan, he tries out some of the machines developed the re to help him find his own voice.
Jan 18 1982
Profile of the snake, which presents a close-up look at how it kills and digests it's prey. Also shows how snake venom could be used in the treatment of many human ailments.
Jan 11 1982

Season 1981

27 Episodes

Horizon presents a documentary on the advances of computer graphics and its multiple uses in simulating reality in industry and science. It looks at the manipulation of 3-D images to paint, animate, design, and test scientific hypothesis.
Dec 21 1981
Horizon reports on the efforts of the British Advanced Passenger Train (APT) engineering team trying to prepare the new APT for its first run.
Dec 07 1981
Horizon explores the Common Agricultural Policy of the EEC that produces mountains of food. We look at the position which many European farmers occupy in western European economies which leads to the creation of overproduction of agricultural products. Do they need to reform the policy?
Nov 30 1981
Richard Feymann was one of the most brilliant theoretical physicists and original thinkers or the 20th century. He rebuilt the theory of quantum electrodynamics, and it was for this work that he won the Nobel Prize in 1965. In this documentary he talks about his motivations to be a scientist and a teacher of science.
Nov 23 1981
Horizon investigates theories about the mystery of why the dinosaurs disappeared 65 million years ago.
Nov 16 1981
This is the second part of the Horizon documentary on the Soviet Union. In this report, we examine the basis for the space arms race between USA and USSR. Are the US efforts for the extensive space defense system to match the Russians based on a misconception of the USSR war effort from space?
Nov 09 1981
Horizon presents a two part documentary looking at the science and technology inside the Soviet Union. In this episode, we look at why the Russians might need to import a chemical processing plant from the UK and computers from the USA when they have a quarter of the world's scientists and still give science and research the highest priority.
Nov 02 1981
Horizon reports on the conflict between the farmers and the conservationists over the English countryside.
Oct 26 1981
The Grid 1981x19
Horizon presents a followup episode of Gentlemen, Lift Up Your Skirts, covering the Formula One racing season while investigating the way the William's racing team fought the fierce competition of the French and Italian racings teams by finding ways around new rulings to make their cars first on the grid.
Oct 19 1981
In this story, Horizon follows the efforts of two mothers who attempt gain control over their very disobedient children.
Oct 12 1981
Horizon investigates Legionnaires disease and the research being carried out in the USA to try find a cause and cure.
Oct 05 1981
In this documentary on nuclear energy, Horizon looks at three experts with regard to the prospect of a nuclear power station sited for construction near where they live.
Sep 28 1981
Horizon presents the second episode of a two part documentary on NASA's unmanned Voyager 1 spacecraft and the data it has sent back from the planets Jupiter and Saturn.
Apr 13 1981
Horizon presents a two part documentary on NASA's unmanned Voyager 1 spacecraft and the data it has sent back from the planets Jupiter and Saturn.
Apr 11 1981
This show is a Horizon documentary about the training by two doctors from India, Rajnikant and Mabelle Arole, who are trying to combat the curable diseases. These diseases are common killers in Indian communities. Also, a report on Salubai, one of these native health workers and her work at Kamkhed in Western India.
Apr 06 1981
In this episode, Horizon explores the new evolutionary theory that there are sudden, vs. gradual, evolutionary changes from one species to another.
Mar 30 1981
Horizon presents a documentary on deaf children and their struggle to learn the sign language.
Mar 23 1981
Horizon explores probabilities of whether we have any intelligent neighbors in space.
Mar 16 1981
Horizon examines the design of Formula One racing cars with a particular reference to the aerodynamic 'skirt'.
Mar 09 1981
A group of scientists are trying to solve public utility problems in Mysore, India.
Mar 02 1981
Horizon reports on the changing role of the community midwife in Britain as more births take place in hospital.
Feb 16 1981
In this episode, Horizon presents a portrait of Dr. Edward Teller, whose opinions about nuclear war are highly controversial.
Feb 09 1981
Horizon investigates the care given to the terminally ill by hospices.
Feb 02 1981
Horizon investigates the reports about a number of scientists who do not conform to contemporary scientific theories.
Jan 26 1981
Horizon explores the research of Egyptian doctors in trying to control bilharzia, a disease caused by parasitic worms.
Jan 19 1981
This episode of Horizon is about holistic medicine, health for the whole person, which uses unorthodox therapies.
Jan 12 1981
Horizon presents a portrait of the renowned economist John Maynard Keynes, Cambridge Don, and Bloomsbury intellectual.
Jan 05 1981

Season 1980

25 Episodes

Chronicles the efforts of geologists throughout the summer of 1980 to study the recently erupted volcano Mt. Saint Helens in Washington State, USA.
Dec 15 1980
Documentary on the slatemaking industry of North Wales, now a dying craft, and the people involved with it.
Dec 01 1980
The Spike 1980x23
Documentary about epilepsy, showing epileptic fits as they occur and explaining what the onlooker should and should not do. Sufferers describe their experiences of the disease and consultant neurologist and psychiatrist, Dr. Peter Fenwick, offers a scientific interpretation.
Nov 24 1980
Documentary on the twenty-five year old experimental industrial set-up in the Spanish city of Mondragon where most of the factories and laboratories are co-operativetively owned and run by a workers committee.
Nov 17 1980
Documentary looking at the scientific facts about the growing cult of Astrology. In this report, Horizon looks at the way astrology has evolved and examines statistical evidence to evaluate its credibility.
Nov 10 1980
Documentary about smoking and about the secondary effects of it. Britain leads the world in smoking deaths at 200 per day. The film looks at prognosis of deat h and at the chances of those who give up smoking of dying of the effects.
Nov 03 1980
Documentary on nuclear energy and the efforts of scientists to contain and control the high risk factors involved with plutonium and uranium.
Oct 27 1980
Explains, within a historical context, how Israel and Jordan are trying to make use of the Dead Sea. Its mineral-rich waters are being harnessed by scientists and engineers to produce such diverse products as protein, potash and cheap energy .
Oct 20 1980
The Way Out 1980x17
Documentary about London Transport and the decline in its services over the year s. It receives less subsidy than an comparable transport system in the world, but would more GLC aid improve the service?
Oct 13 1980
Moving Still 1980x16
The new perspectives which can be gained on the natural world through time-lapse and high-speed photography. Includes footage of droplets of water merging in mid-air, a bullet spiralling up its barrel toward you, a wet dog shaking its fur, flowers bursting open, starfish scurrying on the sea floor, and spark plugs spreading their fire.
Oct 06 1980
Looks at the contrasts in Kenya between the tourist image and the hardship caused by development. In particular, considers the lives of three family groups native to the country and the poverty they are forced to live in by the Kenyan economy geared to the West.
Sep 29 1980
Little Boxes 1980x14
Documentary about industrial design and the effect it has on the look of everyday life. Dieter Rams, Tom Woolfe, Etore Sottsass and Raymond Loewy are among the designers talking about their work .
Sep 22 1980
Astronomers are seen at work in the UK, Arizona, Hawaii, New Mexico and Australia, describing their discoveries about the galaxies beyond the Milky Way.
Sep 15 1980
Investigates various virus infections ranging from smallpox and rabies down to influenza and the common cold. The way they function and the reasons the body builds up resistance to some and not to others.
Sep 08 1980
Documentary on the "information revolution" the advances made in the methods of electronic storage and display of information, and the effects of these advances on democracy, language, national boundaries, bureaucracy and privacy.
Sep 01 1980
Magnet Earth 1980x10
Looks at what is known about the earth's magnetic field, how it affects the world's organisms and in particular at recent research in this field.
Mar 24 1980
Documentary report on the mounting evidence of the horrifying effects of the use of dioxin as a defoliant in Vietnam and as a herbicide in domestic use on both humans and all other living beings.
Mar 17 1980
Documentary on the space voyages of Nasa robot space craft Voyager 1 & 2 and their photographic records of the planet Jupiter.
Mar 10 1980
Explores the potential in recycling rubbish in terms of energy and other resources
Mar 03 1980
About Interferon, a drug made from human blood cells, thought to be capable of controlling viruses and cancer
Feb 25 1980
Documentary film on cancer research in the remote Chinese valley of Lin Xian where the population suffers more than 100 times the incidence of oesophagal cancer than normal.
Feb 18 1980
Documentary on the ways in which athletes from different countries prepare for the Olympic Games and the artificial methods of improving performance, drugs and physiological methods
Feb 11 1980
Documentary which looks at the danger points in flying an airliner on a routine flight from Gatwick to Los Angeles. Danger points are identified and we see research into airtraffic control, aircraft design, the role of the stewardess, avoiding mid-air collisions, electronic flight desks, whirlwind vortices and a new fuel additive that may virtually eliminate the instant conflagrations.
Feb 04 1980
Documentary examination on the process of ageing and some things that can be done about the problems of senility in old people.
Jan 21 1980
Documentary examination of the causes and conditions of the sinking of the Amoco Cadiz oil-tanker, in 1978.
Jan 14 1980

Season 1979

25 Episodes

Decade 1979x25
In this episode by Horizon, G. R. Taylor presents his personal view of science based on previous Horizon episode clips from the 1970's.
Dec 17 1979
Horizon explores current research into the causes and cure for obesity.
Dec 10 1979
This Horizon episode is all about Uranium; its history, the use of uranium for nuclear energy, the dangers of uranium, and the scarcity of the mineral.
Dec 03 1979
Horizon examines the development of the relatively new science of x-ray astronomy.
Nov 19 1979
Horizon investigates how the British landscape is changing its appearance with native trees being replaced by imported species.
Nov 12 1979
This report by Horizon is about current research into the physical and psychological effects of touch, and the effects of touch deprivation.
Nov 05 1979
This Horizon documentary describes the complete history and design of motorcycles which have significantly evolved over the past 80 years.
Oct 29 1979
Horizon takes a trip down the Jonglei Canal which is under construction in Sudan and reports on the changes the new canal will bring to the country, and the rest of the world.
Oct 22 1979
Horizon presents a report on the research into diabetes to determine its causes, controlling measures, and the prevention of complications.
Oct 15 1979
In this episode, Horizon reports on the need to consider more aerodynamic designs for cars to improve fuel economy.
Oct 08 1979
Horizon investigates the environmental protection program going on in the state of Oregon in the USA. Oregon is the first state to clean up it's environment.
Oct 01 1979
Horizon explores the effect of the Mexican oil boom on the country itself and world energy situation.
Sep 24 1979
This Horizon documentary is about the increasing use of robots in industry, and the robot's abilities and weaknesses.
May 28 1979
This episode of Horizon looks at the recent scientific research into how humans become male or female.
May 21 1979
Horizon examines the work of Dr. Lennart Nilsson who has filmed the complete arterial system of the human body.
May 14 1979
This is a Horizon documentary about Liam Hudson, noted psychologist at Brunel University as he challenges modern psychologists.
May 07 1979
Horizon presents a documentary that shows how part of the Amazon river area around the Rio Jari was developed with rice and forestry.
Apr 30 1979
In this episode, Horizon looks at Britain's methods and plans for nuclear waste management and disposal of the fuel elements.
Apr 23 1979
Horizon reports about the attempts to bring about cooperation between the Mediterranean countries to combat pollution of their seas.
Apr 09 1979
Horizon explores the current state of research into the development of artificial replacements for various parts of the body.
Apr 02 1979
In this documentary by Horizon, you are shown a revolution in archaeological dating has shown that metal technology was invented in Europe.
Mar 26 1979
Horizon presents the history and research into the uses of sugar.
Mar 19 1979
Horizon follows the discovery of a chemical in the brain which has morphine-like properties.
Mar 12 1979
In this program, Horizon looks at the effort and money spent on the horse to produce the perfect specimen.
Mar 05 1979
Horizon presents an investigation into the potential and problems of using hydrogen as an alternative to existing fuels.
Feb 26 1979

Season 1978

24 Episodes

Horizon takes a look at the changing behaviour of individual animals in a herd of red deer on the Isle of Rhum.
Dec 29 1978
In this episode, Horizon examines the current developments in electrotherapy.
Nov 24 1978
In this story, Horizon takes a look at the world's leading hibernation research projects.
Nov 17 1978
Horizon explores the years of research that have enabled divers to go to greater and greater ocean depth.
Nov 10 1978
Horizon explores an experimental medical school in Israel where students are trained primarily to care for people.
Nov 03 1978
In this documentary, Horizon examines all sides of the Canadian Harpseal hunt issue and asks if it is really necessary.
Sep 15 1978
Bags of Life 1978x18
Horizon investigates the composition and structure of the membrane that surround individual cells.
Sep 08 1978
Horizon looks at the implications of exploiting Manganese nodules which are scattered over the seabed.
Sep 01 1978
This documentary by Horizon is about six school children taking 'O' levels exams and inter science in Britain.
Aug 25 1978
Horizon presents a brief history of the French railways and the policy behind their future direction.
Aug 18 1978
In this episode, Horizon explains some of the research in multiple sclerosis and how the lives of MS sufferers are affected.
Aug 11 1978
Horizon explores the history of evidence used to support the Big Bang Theory of the creation of the universe.
Aug 04 1978
This episode of Horizon is about the tsetse fly which rules most of Africa and why much of the fertile land can't in Africa can't be used because of the dangerous insect.
Jul 28 1978
Horizon investigates the race to the moon between the USA and Russia and questions the motives behind the space race.
Jul 21 1978
In this episode, Horizon explores the after effects of a stroke when there is a sudden stoppage of blood to the human brain.
Jul 14 1978
About the applications and implications for the future, particularly the effects on the labour market, of microprocessors.
Mar 31 1978
Horizon investigates the reasons for poverty in Britain today, now with seven million on at the poverty line.
Mar 24 1978
Horizon presents a documentary on the development of the Light Amplification by Stimulated Emission of Radiation device, or more commonly know as the Laser.
Mar 10 1978
Horizon reports on last three attempts to build a lighthouse on the Eddystone Rocks, near Plymouth.
Feb 24 1978
Develops the theory that four and a half thousand million years ago the earth was formed thanks to the explosion of a huge star which provided the rocks, the minerals and the radioactivity from which life developed. These theories are based partly on analysis of a meteorite which dropped near a village in Mexico at the beginning of the seventies.
Feb 17 1978
Zero G 1978x04
Horizon presents a report on zero gravity and the effects of weightlessness in spacecraft on humans.
Feb 03 1978
Horizon explores community and residential services available to the elderly in South Hampton, England.
Jan 27 1978
In this episode, Horizon examines the need for an objective approach to land management in Britain.
Jan 20 1978
Horizon investigates how biologists and engineers are pooling their ideas to understand how nature's machines work.
Jan 06 1978

Season 1977

25 Episodes

Horizon explores a new science-based revolution in the production of wine.
Dec 23 1977
This episode of Horizon is a dramatized reconstruction of breakdown of Carl Gustav Jung on the road to insanity.
Dec 09 1977
Horizon presents a report on the prize offered to the first person who could fly a prescribed figure of eight course.
Dec 02 1977
Horizon presents the story of how the river Rhine has defended itself against progress.
Oct 21 1977
Horizon presents evidence that links the drought cycle with the number of magnetically-hyperactive sunspots.
Oct 07 1977
This Horizon episode examines the growing British problem of attempted suicide by an overdose of drugs.
Sep 30 1977
Horizon takes a look at the progress of Charles Darwin's theory of evolution.
Sep 23 1977
Horizon presents a profile on one of the UK's leading pathologists, Keith Simpson.
Sep 16 1977
This Horizon episode reports on research by scientists into identifying a system of markers, such as tissue types on blood cells, which indicate the human being's vulnerability to a whole range of diseases like multiple sclerosis and diabetes, and the possibilities this presents for preventive medicine.
Sep 09 1977
This is a report by Horizon on the successful clean-up of the River Thames in Britain.
Sep 02 1977
Horizon 2002 1977x15
Horizon theorizes how life could be in 2002, using extracts from previous Horizon episodes.
Aug 26 1977
Horizon makes an investigation into plant biology.
Aug 05 1977
This Horizon report is about Prof. Hubert Montagner and his study of non-verbal communication in young children, along with his findings.
Jul 29 1977
In this episode, Horizon looks at how, despite the high costs of the National Health System of Britain, more money doesn't mean better health.
Jul 22 1977
BBC television documentary which explores, using live-action dramatisation, the life's work of Sir Isaac Newton, emphasising his sources of inspiration.
Jul 15 1977
Horizon explores the debate on human genetic engineering.
Apr 01 1977
In this episode, Horizon investigates research into solar energy in the USA, Japan, and the UK.
Mar 18 1977
Horizon looks at an ecological study of the Ythan estuary in Scotland.
Mar 11 1977
This story by Horizon traces the efforts of astronomers and scientists through history to prove the existence of life on Mars.
Mar 04 1977
Horizon presents a story that depicts an astonishingly harsh way of life of the Netsilik Eskimos whose whole life is based on seal hunting.
Feb 25 1977
In this episode, Horizon explores how animal experiments are carried out in Britain.
Feb 18 1977
Horizon investigates Sociobiology, which is a study of human social behaviour based on zoological research into animal behaviour.
Feb 04 1977
Horizon looks at how recent excavations in Africa have changed the accepted ideas of man's origins and age.
Jan 21 1977
Horizon traces the history of the oral contraceptive pill through the last 60 years as told by its pioneers.
Jan 14 1977
Horizon documents the life of crocodiles and alligators, and their breeding and exploitation.
Jan 07 1977

Season 1976

32 Episodes

This Horizon episode is about the actual King Arthur's Round Table, which hangs in the Hall of Winchester Castle, Hants, Britain.
Dec 20 1976
Horizon looks at new developments in computer technology that have made mass surveillance possible, and also its political misuse.
Dec 13 1976
This is a Horizon documentary about six people who have each lost someone very close, as they describe their progress through grief.
Dec 06 1976
Horizon reports on Pacific Ocean fishermen who are famous for their extraordinary fishing skills. They catch fish with a kite and a tassel of spiders webs.
Nov 29 1976
This episode of Horizon is about infertility and the state of British scientific research in this area.
Nov 22 1976
This Horizon documentary explores animal behavior. Animals do not act for the good of their own species, rather for the preservation of their own genes.
Nov 15 1976
This is an investigative report by Horizon that shows how the Equity Funding Corp. of America produced two billion dollars worth of phoney insurance.
Nov 08 1976
Horizon makes an investigation into claims by a group of scientists who theorize that dinosaurs were not actaully cold-blooded reptiles, but hot-blooded, like mammals.
Nov 01 1976
Horizon looks at today's precision guided weapons.
Oct 25 1976
In the episode, Horizon explores the history of man's understanding of the sun's structure and observations in recent years.
Jun 14 1976
Horizon investigates a local authority residential home in Wandsworth, Britain, for emotionally disturbed children.
Jun 07 1976
This report by Horizon explores the drought crisis of 1976.
May 31 1976
Dying 1976x20
This is a Horizon documentary on how a widow faces the last day of her husband's life and the story of three other people who know they only have a short time to live.
May 24 1976
Horizon looks at food production in Peru today.
May 17 1976
The Planets 1976x18
Horizon outlines the latest discoveries of the formation of the planets by space craft visiting Mars, Venus, Mercury, and Jupiter.
May 10 1976
This episode of Horizon delves in the research into the causes for, and the methods of eradicating 'cot deaths' in Britain.
May 03 1976
Horizon explores the comparative research study into progressive versus formal primary school teaching in the UK.
Apr 26 1976
This Horizon documentary investigates the ways that the blind and partially blind are aided.
Apr 12 1976
This report by Horizon investigates the aggressive and oppressive history of the Mescalero and Chiricuhua Apache Indians of New Mexico in the USA.
Apr 05 1976
Horizon investigates the developments in and the treatment of schizophrenia.
Mar 29 1976
This Horizon reports is about Margaret Mead, who at age 74, is one of America's most influential social scientists.
Mar 22 1976
This is a Horizon reconstruction of the trial of Dr. Kenneth Edelin who was arrested after performing an abortion in 1973.
Mar 15 1976
Horizon reports on enzymes and the way they are being put on work in the industry and medicine fields.
Mar 08 1976
This documentary by Horizon takes a look at the shark, the supreme predator of the sea.
Mar 01 1976
Horizon traces back the origins and development of the pre-Incan Chimu civilization of Peru.
Feb 23 1976
Horizon investigates the mysterious Bermuda Triangle.
Feb 16 1976
In this episode of Horizon, we look at the need for confidence in the doctor to patient relationship.
Feb 09 1976
Horizon examines the projected expansion of the coal mining industry.
Feb 02 1976
This episode of Horizon explores what actually happens inside our bodies using new optical techniques.
Jan 26 1976
Horizon reports on the country of Tanzania, a country that spends only one dollar per person on health services, and more than half of all children born there die before the age of five.
Jan 19 1976
This episode of Horizon is about symbiosis - the close association between two or more species for their mutual benefit.
Jan 12 1976
Horizon investigates heart transplant research and techniques perfected and currently used by Dr. Norman Shumway in Britain.
Jan 05 1976

Season 1975

26 Episodes

This documentary by Horizon is about the Trobriand islanders, whose culture is based on the Kula, a communication system of giving and receiving.
Dec 29 1975
This is a report by Horizon on Transcendental Meditation, or TM, brought to the West by the Maharishi Mahesh Yogi.
Aug 18 1975
Cannabis 1975x24
Horizon takes a look at the history of cannabis and the research on the effects of smoking marijuana.
Aug 11 1975
This documentary by Horizon commemorates the dropping of the A-bomb on Hiroshima, Japan on August 6, 1945.
Aug 04 1975
In this Horizon episode, Rene Thom's mathematical discovery of the catastrophe theory is investigated.
Jul 28 1975
This episode of Horizon describes the various aspects of the pollution problem of the Mediterranean Sea.
Jul 21 1975
In this documentary, Horizon reports on the reading process; how it works for the fluent, and how it should be taught.
Jul 14 1975
Horizon reports on the history of superconductivity, from discovery, to the present.
Jul 07 1975
Horizon investigates the discovery of gaseous anaesthetic from 1840 until the early years of 20th century.
Jun 30 1975
This report by Horizon brings you scientists that are using Antarctica as a giant natural lab to study who has polluted Earth most; man or nature.
Jun 23 1975
Horizon explores the psychology of music, as it explains why music has such a powerful emotive effect in every society.
Jun 16 1975
Horizon investigates the attempts by the University of Newcastle in England to define and create an ideal living and working environment.
Jun 09 1975
This report by Horizon covers an experiment at McMaster University Medical School, in Ontario, Canada.
Jun 02 1975
Benjamin 1975x13
This episode of Horizon follows the progress of Benjamin Pile, born on 22 November, 1974, at Oxford in Britain.
May 19 1975
This is a Horizon report on the building of the British military deterrent from the first decision to make it in 1941 until the present state of lethargy.
May 12 1975
Brain Poison 1975x11
Horizon presents an investigation into the effects on health of lead in the urban atmosphere.
May 05 1975
Horizon explores the effect of fibre in diet on the diseases of western world.
Apr 28 1975
Horizon investigates the life and work of the great engineer, Isambard Kingdom Brunel.
Apr 21 1975
This report by Horizon describes the resistance to antibiotics, fast growing in all countries, and the dangers it could mean for the future.
Apr 14 1975
This report by Horizon covers an investigation by a group of Australian scientists that looks into the origins and history of the Australian Aborigines.
Apr 07 1975
Project Fido 1975x06
This episode of Horizon shows the peril to man of the ever increasing dog population in the western world.
Feb 24 1975
Horizon investigates the symptoms of menopause and the various degrees in which it occurs.
Feb 17 1975
This episode of Horizon examines the problems of ship safety in the English Channel.
Feb 10 1975
Horizon investigates the growing tendency in hospitals in Britain to induce childbirth by injecting the hormone oxytocin into expectant mothers.
Jan 27 1975
This investigative report by Horizon covers an investigation into the deaths of people who inhaled asbestos dust at Acre Mill, Yorkshire, England.
Jan 20 1975
Jan 06 1975

Season 1974

32 Episodes

Horizon presents a dramatized documentary on the rise to power of Trofim Denisovich Lysenko, a young Ukrainian agriculturalist.
Dec 30 1974
This documentary by Horizon reports on the development of cinematographic special effects from 1890's to date.
Dec 23 1974
Horizon investigates the developments and research in forestry which may now help to overcome shortage of timber.
Dec 16 1974
Joey 1974x29
This story by Horizon reconstructs the true life story of Joey Deacon.
Dec 09 1974
Horizon presents Dr. Schumacher's theory that use of modern technology could make the working week a creative experience.
Nov 11 1974
Horizons reviews the scientific work of Americans in the field of research in communication with animals.
Nov 04 1974
This report by Horizon explores how far people are prepared to suppress their own moral scruples in the face of necessity to obey authority.
Oct 28 1974
Horizon investigates some of the risks and problems involved in bringing oil from the North Sea ashore.
Sep 02 1974
Adam or Eve? 1974x24
This episode of Horizon investigates the role that hormones play in the stages of mammalian sexual development.
Aug 12 1974
Horizon brings you a report by Tom Harrison on anti-nazi propaganda in Britain during World War II.
Aug 05 1974
Horizon reports on the beef crisis and rising prices.
Jul 29 1974
Horizon explores the technological and economic reasons for the mining revival in Britain.
Jul 22 1974
In this episode, Horizon reports on the rising number of imigrant doctors working in the National Health System of Britain.
Jul 15 1974
This documentary of Horizon reports on the discovery of the structure of DNA in 1953 by Dr. Francis Crick and Prof. James Watson.
Jul 08 1974
In this report, Horizon presents the state of hill farming in Wales.
Jul 01 1974
In this episode of Horizon, you learn about transferring the basis of modern industry production from human skills to computer programmed machines.
Jun 24 1974
Horizon investigates the subject of sleep in Britain and the USA.
Jun 10 1974
Documentary about the origins of life which attempts to find out what happened in the one billion years before fossil evidence begins.
Jun 10 1974
Horizon reports on bridges in Britain...how safe are they?
Jun 03 1974
Horizon investigates captive animal breeding to prevent extinction of animal species in the wild.
May 13 1974
This Horizon episode is about the search for quarks, thought to be the substance of which electrons, protons, and neutrons are made of.
May 06 1974
Horizon looks back at the discovery and the development of anesthesia.
Apr 29 1974
In this report, Prof. John Maynard Smith looks back at some of the subjects Horizon has presented since 1964.
Apr 22 1974
In this Horizon episode, we look at attempts by scientists to solve the energy crisis of future by building nuclear fusion reactors.
Mar 11 1974
Horizon examines the British Hudson Institute's methods and predictions for the future of economics.
Mar 04 1974
Horizon investigates reports of abuse of the Colorado river in the USA.
Feb 18 1974