Recommended • 166 videos

Grasslands

Grasslands cover one quarter of all land and support the vast gatherings of wildlife, but to survive here animals must endure the most hostile seasonal changes on the planet. From Asia's bizarre-looking Saiga antelope to the giant anteaters of Brazil, grassland animals have adapted in extraordinary ways to cope with these extremes. In the flooded Okavango, lions take on formidable buffalo in epic battles, on the savannah bee-eaters take advantage of elephants to help catch insects and, on the freezing northern tundra, caribou embark on great migrations shadowed by hungry Arctic wolves.

58m • 2016 • Planet Earth II

Deserts

The world's deserts force animals to come up with ingenious ways of coping with hostile conditions, giving rise to the most incredible survival stories on earth.

57m • 2016 • Planet Earth II

Part 3

Jacques reveals how the lessons learned from selling to children were used to make childlike consumers of us all. From the rise of product-driven kids’ TV in the 80s, to the man who designed cars that appealed to children, and the contemporary creators of games that hook adults, Jacques asks how spending turned into a game – one that we can’t stop playing.

58m • 2014 • The Men Who Made Us Spend

Part 2

In the second of this three-part series, Jacques reveals how fear remains one of the most powerful drivers of our spending. Visiting a neuroscience lab, Jacques hears from a consumer psychologist about how our brains are much more responsive to negative than to positive stimuli. He also meets some experts who have turned this knowledge into an art form, helping manufacturers make billions from our anxieties and insecurities. At the remote chateau of French anthropologist Clotaire Rapaille, Jacques learns how our sense of fear drives us in ways many of us do not understand - and how Rapaille's insights have helped companies sell us everything from SUVs to cigarettes. At the Beverley Hills pad of multimillionaire marketer Rohan Oza, he hears how Oza's connections to celebrities helped propel VitaminWater into the soft drink stratosphere, despite the fact that the product's health claims have been called into question. Jacques also confronts the men who say they are combating our most deep-seated fear - of age and decline. In Las Vegas, he mingles with the doctors and businessmen attending a global conference aimed at selling us ways to stay young and healthy, challenging them to justify their claims for the anti-aging business that has made them rich.

58m • 2014 • The Men Who Made Us Spend

Part 1

In the first of this three-part series investigating consumer spending, Jacques reveals how the concept of 'product lifespan' holds the key to our ever-churning consumerism. Exploring the historical origin of planned obsolescence, when some of the world biggest electrical manufacturers formed a light bulb cartel in the 1920s, Jacques reveals how products that are essential to our modern lifestyles are still made to break. During his investigation, Jacques uncovers the process by which a crucial transformation happened and attitudes towards spending were transformed. Instead of needing new goods because our old ones were broken, we learned to want them for reasons of fashion and aspiration - awaking a consumer appetite that could never be satisfied. In the US, he visits a recycling centre where brand-new high-tech goods are destroyed before they have even come out of the box. Jacques also meets some of the companies that encourage consumers to be dissatisfied with what they have and encourage purchases as part of an ever-faster cycle of 'upgrades'. He asks a senior IKEA executive why, despite the company's commitment to sustainability, it still encourages repeated discarding and purchasing. Jacques also talks to a former senior Apple employee who reveals how the company's new focus on fashion, with its colourful iPhones, keeps us buying even when technological innovation slows.

58m • 2014 • The Men Who Made Us Spend

Jungles

Jungles provide the richest habitats on the planet - mysterious worlds of high drama where extraordinary animals attempt to survive in the most competitive place on earth. Flooded forests are home to caiman-hunting jaguars and strange dolphins that swim amongst the tree tops, while in the dense underworld, ninja frogs fight off wasps and flying dragons soar between trees. Acrobatic indri leap through the forests of Madagascar, while the jungle night conceals strange fungi and glow-in-the-dark creatures never filmed before.

57m • 2016 • Planet Earth II

Mountains

The great mountain ranges are some of the planet's most spectacular landscapes, but they are unforgiving places to live in, and only a few animals have what it takes to live at extreme altitude. Mountain animals are amongst the most elusive in the world, and this film provides unique and intimate glimpses into their secretive lives. Witness the moment four snow leopards come together when a mother and cub become trapped between two rival males. Join grizzly bears as they dance against trees to rub off their winter fur and soar with golden eagles hunting amongst Europe's snow-capped peaks.

58m • 2016 • Planet Earth II

Islands

Remote islands offer sanctuary for some of the planet's strangest and rarest creatures. The rare pygmy three-toed sloth enjoys a peaceful existence on an idyllic Caribbean island, while nesting albatross thrive in predator-free isolation. But island life always comes at a cost. On the Galapagos Islands, young marine iguana must escape an onslaught of deadly racer snakes the moment they hatch from the sand. On the sub-Antarctic island of Zavodovski, life gets more extreme still. Every day, one and a half million penguins risk being battered against the rocks by fierce waves as they try to get on and off the island.

58m • 2016 • Planet Earth II

Before the Flood

Join Leonardo DiCaprio as he explores the topic of climate change, and discovers what must be done today to prevent catastrophic disruption of life on our planet.

95m • 2016

The Wildest Weather in the Universe

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. They began with our solar system, sending spacecraft to explore its furthest reaches, and now the latest telescopes are enabling astronomers to study planets further afield. Our exploration of the universe is revealing alien worlds with gigantic storm systems that encircle entire planets, supersonic winds and extreme temperatures. On some planets, 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. We thought we had extreme weather on Earth, but it turns out that it is nothing compared to what's out there.

58m • 2016 • Horizon

HyperNormalisation

Adam Curtis - HyperNormalisation Our world is strange and often fake and corrupt. But we think it’s normal because we can’t see anything else. HyperNormalisation - the story of how we got here.

166m • 2016

The Lost Tribes of Humanity

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.

59m • 2016 • Horizon

How to Find Love Online

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.

59m • 2016 • Horizon

The Science of Laughter

Comedian Jimmy Carr takes over Horizon for this one-off special programme, produced as part of BBC2's sitcom season. Jimmy turns venerable documentary strand Horizon into a chat show, with eminent laughter scientists as guests and a studio audience to use as guinea pigs. Jimmy and his guests try to get to the bottom of what laughter is, why we enjoy it so much and what, if anything, it has to do with comedy. Between them, and with the help of contributions from other scientists on film, Jimmy and guests discover that laughter is much older than our species, and may well have contributed to making us human. With professors Sophie Scott, Robin Dunbar and Peter McGraw.

58m • 2016 • Horizon

My Amazing Twin

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.

59m • 2016 • Horizon

Planetary

We are in the midst of a global crisis of perspective. We have forgotten the undeniable truth that every living thing is connected. PLANETARY is a provocative and breathtaking wakeup call – a cross continental, cinematic journey, that explores our cosmic origins and our future as a species. It is a poetic and humbling reminder that now is the time to shift our perspective. PLANETARY asks us to rethink who we really are, to reconsider our relationship with ourselves, each other and the world around us – to remember that we are PLANETARY

84m • 2015

Inside Cern

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.

58m • 2016 • Horizon

The Pale Blue Dot

In this final episode Professor Brian Cox travels to Iceland, where the delicate splendour of a moonbow reveals the colours that paint our world, and he visits a volcano to explain why the sun shines. By exploring how sunlight transforms the plains of the Serengeti, drives the annual migration of humpback whales to the Caribbean and paints the moon red during a lunar eclipse, Brian reveals the colour signature of our life-supporting planet. Finally, at an observatory high in the Swiss Alps, he shows how these colours aren't simply beautiful, but that understanding how they're created is allowing us to search for other Earths far out in the cosmos.

58m • 2016 • Forces of Nature With Brian Cox

The Moth and the Flame

In this episode, Professor Brian Cox shows how Earth's basic ingredients, like the pure sulphur mined in the heart of a deadly volcano in Indonesia, have become the building blocks of life. Hidden deep in a cave in the Dominican Republic lies a magical world created by the same property of water that makes it essential to life. Clinging to a precipitous dam wall in Italy, baby mountain goats seek out Earth's chemical elements essential to their survival. In the middle of the night in a bay off Japan, Brian explains how the dazzling display of thousands of glowing squid shows how life has taken Earth's chemistry and turned it into the chemistry of life.

58m • 2016 • Forces of Nature With Brian Cox

Somewhere in Spacetime

Professor Brian Cox follows Earth's epic journey through space. He takes to the air in a top-secret fighter jet to race the spin of the planet and reverse the passage of the day. In Brazil, a monstrous wave that surges up the Amazon River provides an epic ride of a different kind - chased by a top surfer through the rainforest, this tidal wave marks Earth's constant dance with the Moon. Greenland experiences some of the biggest swings in seasons in the world, but despite the deep freeze, the harsh winter brings opportunity to the Inuit people who live there. All this spectacle here on Earth signals that we are thundering through the universe at breakneck speed. Brian explains why we can't feel it and how understanding motion brings us to understanding the nature of space and time itself, leading to the astonishing conclusion that the past, present and future all exist right now.

58m • 2016 • Forces of Nature With Brian Cox

The Universe in a Snowflake

In this episode Brian uncovers how the stunning diversity of shapes in the natural world are shadows of the rules that govern the universe. In Spain he shows how an attempt by hundreds of people to build the highest human tower reveals the force that shapes our planet. In Nepal, honey hunters seek out giant beehives that cling to cliff walls. The perfect hexagonal honeycombs made by the bees to store their honey conceal a mathematical rule. Off the coast of Canada, Brian explains how some of the most irregular, dangerous shapes in nature - massive icebergs that surge down from Greenland and into shipping lanes of the Atlantic - emerge from a powerful yet infinitely small force of nature. Even the most delicate six-sided snowflake tells a story of the forces of nature that forged it.

58m • 2016 • Forces of Nature With Brian Cox

Why you shouldn't trust successful people's advice

10 Ways to be successful... that's bullshit :)

4m • 2016

Into the Atom

Caught up in the race to discover the atom’s internal parts — and learn how they fit together — a young British physicist, Harry Moseley, uses newly discovered X-rays to put the Periodic Table in a whole new light. And a young American chemist named Glenn Seaborg creates a new element — plutonium — that changes the world forever, unleashing a force of unimaginable destructive power: the atomic bomb.

56m • 2015 • The Mystery of Matter: Search for the Elements

Unruly Elements (1859-1902)

Over a single weekend in 1869, a young Russian chemistry professor named Dmitri Mendeleev invents the Periodic Table, bringing order to the growing gaggle of elements. But this sense of order is shattered when a Polish graduate student named Marie Sklodowska Curie discovers radioactivity, revealing that elements can change identities — and that atoms must have undiscovered parts inside them.

56m • 2015 • The Mystery of Matter: Search for the Elements

Out of Thin Air (1754-1806)

One of science’s great odd couples — British minister Joseph Priestley and French tax administrator Antoine Lavoisier — together discover a fantastic new gas called oxygen, overturning the reigning theory of chemistry and triggering a worldwide search for new elements. Soon caught up in the hunt is science’s first great showman, a precocious British chemist named Humphry Davy, who dazzles London audiences with his lectures, introduces them to laughing gas and turns the battery into a powerful tool in the search for new elements.

56m • 2015 • The Mystery of Matter: Search for the Elements

Stuff: A Horizon Guide to Materials

Engineer Jem Stansfield looks back through the Horizon archives to find out how scientists have come to understand and manipulate the materials that built the modern world. Whether it's uncovering new materials or finding fresh uses for those we've known about for centuries, each breakthrough offers a tantalising glimpse of the holy grail of materials science - a substance that's cheap to produce and has the potential to change our world. Jem explores how a series of extraordinary advances have done just that - from superconductors to the silicon revolution.

58m • 2012 • Horizon

Ruin

Alaric's Goths sack Rome; Attila the Hun seizes power through chaos and destruction while the barbarians move in for the kill. The Vandal king, Geiseric, masterminds the end of Rome; the Empire falls.

83m • 2016 • Barbarians Rising

Revenge

Arminius unites the tribes and engineers an ambush attack to drive Rome out of Germania; Boudica unleashes bloody vengeance on the Empire; Rome's betrayal of the Goths ends in an apocalyptic clash.

83m • 2016 • Barbarians Rising

Rebellion

Rome brings its enemies inside its borders as the age of Empire begins; Spartacus leads a slave uprising that threatens Rome on its own turf; Arminius, Germania's native son raised as a Roman, must choose a side in the fight for freedom.

83m • 2016 • Barbarians Rising

Resistance

Series premiere of a docudrama that chronicles the rebel tribes that brought down the Roman Empire. In the opener, An epic 700-year battle for freedom begins as the barbarians rise against Rome; Hannibal builds a rebel alliance and conquers the Alps; the shepherd Viriathus unleashes a wave of resistance to save his people from destruction.

83m • 2016 • Barbarians Rising

Tomorrow's World

Liz Bonnin delves in to the world of invention, revealing the people and technologies set to transform all our lives. She examines the conditions that are promising to make the 21st century a golden age of innovation and meets some of the world's foremost visionaries, mavericks and dreamers. From the entrepreneurs that are driving a new space race, to the Nobel Prize wining scientist leading a nanotech revolution, this is a tour of the people and ideas delivering the world of tomorrow, today.

58m • 2013 • Horizon

Visual Image

Our ability to see and record live events from right across the world has shrunk the globe, making virtual neighbours of us all. It is a defining characteristic of our modern world. The final episode in the series reveals the fascinating stories that made such everyday miracles possible. It tells the story of the handful of extraordinary inventions and their inventors who tackled the complexities of chemistry and electronics and discovered how to capture and reproduce still and moving images. Michael Mosley and academics Prof Mark Miodownik and Dr Cassie Newland tell the amazing story of three of the greatest and most transformative inventions of all time - photography, moving pictures and television.

59m • 2013 • The Genius of Invention

Communication

Nothing has shrunk the globe more than our extraordinary ability to talk to one another across the oceans and continents. Episode three of The Genius of Invention reveals the fascinating chain of events that made such every-day miracles possible. It tells the story of the handful of extraordinary inventors and inventions who helped build the modern world by harnessing electricity and electromagnetism to enable us to send instant messages across vast distances. Michael Mosley and academics, Prof Mark Miodownik and Dr Cassie Newland tell the amazing story of three more of the greatest and most transformative inventions of all time; the electric telegraph, the telephone and wireless communication. Our experts explain how these inventions came about by sparks of inventive genius and steady incremental improvements. They separate myth from reality in the lives of the great inventors and celebrate some of the most remarkable stories in British history.

58m • 2013 • The Genius of Invention

Speed

This episode reveals the fascinating chain of events that made quick and safe travel possible even across the greatest distances a possibility. From the Rolls Royce aero-engine factory in Derby, Michael Mosley, Prof Mark Miodownik and Dr Cassie Newland tell the amazing story of three more of the greatest and most transformative inventions of all time, the steam locomotive, the internal combustion engine and the jet engine. Our experts explain how these inventions came about by sparks of inventive genius and steady incremental improvements hammered out in workshops. They separate myth from reality in the lives of the great inventors and celebrate some of the most remarkable stories in British history.

59m • 2013 • The Genius of Invention

Power

This episode reveals the fascinating chain of events that made everyday miracles such as turning on a light or boiling a kettle possible. Michael Mosley, Professor Mark Miodownik and Dr Cassie Newland tell the amazing story of three of the most transformative inventions of all time: the steam engine, the electrical generator and the steam turbine. They explain how these inventions came about by sparks of inventive genius and steady, incremental improvements hammered out in British workshops.

58m • 2013 • The Genius of Invention

Home

To survive, animals need somewhere to live, a place that provides the necessities of life, shelter from the elements and a refuge from enemies. Good homes are rare and competition can be intense – finding a home is one thing, but defending it is quite another.

58m • 2014 • Life Story

Parenthood

In the final challenge of the game of life, raising offspring is the ultimate prize. Continuing the line through the next generation, is the next best thing to immortality. But it’s far from easy... Some parents must risk their own lives for their offspring.

58m • 2016 • Life Story

Why are We Getting So Fat?

Over 62 per cent 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.

58m • 2016 • Horizon

E-Cigarettes: Miracle or Menace

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.

59m • 2016 • Horizon

Curing Alzheimer's

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.

58m • 2016 • Horizon

Ice Station Antarctica

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.

59m • 2016 • Horizon

Part 3

Neil Oliver reveals the truth behind the legend of the Vikings. (Part 3.) Neil explores how the Viking Age finally ended, tracing the Norse voyages of discovery, the first Danish kings, and the Christian conversions that opened the door to European high society. He also uncovers the truth about England's King Canute - he was not an arrogant leader who thought he could hold back the waves, but the Viking ruler of an entire empire of the north and an early adopter of European standardisation.

58m • 2012 • Vikings

Part 2

Neil Oliver reveals the truth behind the legend of the Vikings. (Part 2.) Neil Oliver heads out from the Scandinavian homelands to Russia, Turkey and Ireland to trace the beginnings of a vast trading empire that handled Chinese silks as adeptly as Pictish slaves. Neil discovers a world of 'starry-eyed maidens' and Buddhist statues that are a world away from our British experience of axe-wielding warriors, although it turns out that there were quite a few of those as well.

58m • 2012 • Vikings

Part 1

Neil Oliver reveals the truth behind the legend of the Vikings. (Part 1.) Neil begins by discovering the mysterious world of the Vikings' prehistoric ancestors. The remains of weapon-filled war boats, long-haired Bronze Age farmers, and the Swedish site of a royal palace and gruesome pagan ritual conjure up an ancient past from which the Viking Age was to suddenly erupt.

59m • 2012 • Vikings

The Story of Information

Professor Jim Al-Khalili discovers the intriguing story of how we discovered the rules that drive the universe. (Part 2: The Story of Information) Professor Jim Al-Khalili investigates one of the most important concepts in the world today - information. He discovers how we harnessed the power of symbols, everything from the first alphabet to the electric telegraph through to the modern digital age. But on this journey he learns that information isn't just about human communication, it's woven very profoundly into the fabric of reality.

59m • 2012 • Order and Disorder

The Story of Energy

Professor Jim Al-Khalili discovers the intriguing story of how we discovered the rules that drive the universe. (Part 1: The Story of Energy) Energy is vital to us all, but what exactly is energy? In attempting to answer this question Jim investigates a strange set of laws that link together everything from engines to humans to stars. It turns out that energy, so critical to daily existence, actually helps us make sense of the entire universe.

59m • 2012 • Order and Disorder

Should We Close Our Zoos

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 for stem cells. Veteran conservation scientist Dr Sarah Bexell tells Liz the science of captive breeding is giving humanity false hope.

59m • 2016 • Horizon

Race for Absolute Zero

This two-part scientific detective tale tells the story of a remarkable group of pioneers who wanted to reach the ultimate extreme: absolute zero, a place so cold that the physical world as we know it doesn't exist, electricity flows without resistance, fluids defy gravity and the speed of light can be reduced to 38 miles per hour. Each film features a strange cast of eccentric characters, including: Clarence Birds Eye; Frederic 'Ice King' Tudor, who founded an empire harvesting ice; and James Dewar, who almost drove himself crazy by trying to liquefy hydrogen. Absolute zero became the Holy Grail of temperature physicists and is considered the gateway to many new technologies, such as nano-construction, neurological networks and quantum computing. The possibilities, it seems, are limitless. Part 2: Race for Absolute Zero Focuses on the fierce rivalry that took place in the laboratories in Britain, Holland, France and Poland as they sought the ultimate extreme of cold. The program will follow the extraordinary discoveries of superconductivity and superfluidity and the attempt to produce a new form of matter that Albert Einstein predicted would exist within a few billionths of degrees above absolute zero.

59m • 2007 • Absolute Zero

Conquest of Cold

his two-part scientific detective tale tells the story of a remarkable group of pioneers who wanted to reach the ultimate extreme: absolute zero, a place so cold that the physical world as we know it doesn't exist, electricity flows without resistance, fluids defy gravity and the speed of light can be reduced to 38 miles per hour. Each film features a strange cast of eccentric characters, including: Clarence Birds Eye; Frederic 'Ice King' Tudor, who founded an empire harvesting ice; and James Dewar, who almost drove himself crazy by trying to liquefy hydrogen. Absolute zero became the Holy Grail of temperature physicists and is considered the gateway to many new technologies, such as nano-construction, neurological networks and quantum computing. The possibilities, it seems, are limitless. Part 1: Conquest of Cold Chronicles the major discoveries leading towards the mastery of cold, beginning with King James I's court magician, Cornelius Drebbel, who managed to air condition the largest interior space in the British Isles in 1620. Other stories will include the first "natural philosopher," Robert Boyle, a founder of the Royal Society in Great Britain; the Grand Duke Ferdinand II de Medici's involvement in the creation of the first thermometer; the establishment of the laws of thermodynamics by three young scientists, Sadi Carnot, James Joule and William Thomson; and Michael Faraday's critical achievement in liquefying several other gases which set the stage for the commercial application of cold to refrigeration and air conditioning.

59m • 2007 • Absolute Zero

The End of the Solar System

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?

59m • 2016 • Horizon

Oceans of the Solar System

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.

58m • 2016 • Horizon

The Mystery of Dark Energy

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.

59m • 2016 • Horizon

Project Greenglow: The Quest for Gravity Control

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, 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 groundbreaking 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'. 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.

59m • 2016 • Horizon

The Immortalist

The 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?

59m • 2016 • Horizon

Why We Love Disaster News

Why are we so captivated and fascinated by news stories about disasters? Is it ghoulish and voyeuristic? Not at all...

2m • 2015 • The School of Life

How to Use Drugs

We’re still only at the dawn of learning how to use drugs properly – knowing what drugs we need and when we should take them. We look forward to a brighter future for drug use.

6m • 2016 • The School of Life

Why We Love to Blame Our Partners

It’s an odd quirk of relationships that, after a time, we tend to develop the sincere conviction that it is all always our partner’s fault.

3m • 2016 • The School of Life

How to Find Fulfilling Work

The key to finding fulfilling work is to think a lot, analyse one's fears, understand the market, reflect on capitalism.

5m • 2015 • The School of Life

The Perfect Country

This is a thought experiment about what the perfect country might be like. It's not an idle daydream, it's a way of highlighting some of the problems with our own nations and a way of signalling what the true opportunities might be.

8m • 2016 • The School of Life

Political Theory - Karl Marx

Karl Marx remains deeply important today not as the man who told us what to replace capitalism with, but as someone who brilliantly pointed out what was inhuman and alienating about it.

9m • 2014 • The School of Life

Philosophy - Plato

Plato was one of the world's earliest and possibly greatest philosophers. He matters because of his devotion to making humanity more fulfilled.

6m • 2014 • The School of Life

Why Religious Beliefs Aren't Just Silly

Nowadays, many atheists declare not just that god is dead but that anyone who believes in him must be stupid. This seems a little harsh – we prefer to think about where religious beliefs come from: the pained parts of ourselves.

3m • 2015 • The School of Life

Suicide

Suicide is a very rare phenomenon at the far end of human anguish. And yet its existence tells us something crucial about how fragile we all are: it's a further reminder of the need for compassion.

4m • 2015 • The School of Life

How to Get Divorced

The rules for how to doom a relationship are relatively easy to follow. Here are a selection that are guaranteed to blow up love.

3m • 2015 • The School of Life

Why Some Countries Are Poor and Others Rich

The reason why some countries are rich and others poor depends on many things, including the quality of their institutions, the culture they have, the natural resources they find and what latitude they're on.

8m • 2014 • The School of Life

Water Apocalypse

California is on the brink of an apocalypse. The state faces a future of drought that will cost billions in lost farm revenue and thousands of jobs. But the challenges facing the state are not unique: All over the world, governments are struggling with bigger populations and a diminishing supply of freshwater. Innovators across the globe are seeking solutions in emergent technologies to prevent a planet-wide water crisis.

43m • 2015 • Breakthrough

Energy on the Edge

We are surrounded by clean, raw energy waiting to be tapped - energy that could eventually replace fossil fuels. Finding new ways to harness the energy around us takes a rare breed of scientist-engineers: men and women with a combination of technical skill, imagination, and unwavering focus. If we act now, developments in energy production could avert disaster and usher in a new era of clean, safe energy.

43m • 2015 • Breakthrough

The Age of Aging

In recent years, close study of the aging process has opened up new ways that could help us all live healthier for longer. Can we move beyond treating individual diseases, and instead treat the aging process itself? But would a longer life necessarily be a better life? A loose-knit group of researchers believe the real breakthrough is extending our health span - the period of life spent free of disease.

43m • 2015 • Breakthrough

Decoding the Brain

After millennia of speculation about what goes on inside the human brain, we now have the tools to explore its hidden reaches. These tools are leading to research that may help those suffering from afflictions such as epilepsy and Alzheimer's disease. They are also shedding light on the mystery of consciousness and what makes us who we are.

43m • 2015 • Breakthrough

More than Human

Scientific advancements are challenging the concept of what it means to be human. Technology embedded in our bodies is fairly common: artificial limbs, pacemakers. But new research is taking us beyond replacement parts and into a new realm that is changing the nature of the human body and the human mind. Will the fusion of biology and technology change how we think, how we feel, how we experience the world?

43m • 2015 • Breakthrough

Fighting Pandemics

The Ebola outbreak of 2014 almost brought the world to its knees, but this crisis has mobilized scientists and researchers, paving the way for new treatments and vaccines. From antibiotics and vaccines to computer programs that predict how viruses will spread, new lifesaving tools will be used to fight a wide range of viruses in the near future, including HIV, influenza, dengue fever, malaria, and a host of other killer diseases.

43m • 2015 • Breakthrough

How to be an Astronaut

On the 15th Dec 2015, Tim Peake will launch into space to be Britain's first astronaut on board the International Space Station. For the past two years, Tim has been filming a video diary for Horizon showing the risks, pressures and rigorous training required to launch into space. Horizon also talks exclusively to his wife and two children as they prepare to wave him goodbye on his voyage to space. From training in the Soyuz capsule, centrifuges, space station mockups, virtual reality and a huge pool to replicate spacewalks, to dealing with the physical dangers of weightlessness, witnessing his first launch and spending time away from his wife Rebecca and his two sons, this is an intimate portrait and remarkable insight into the world of an astronaut.

59m • 2015 • Horizon

Beyond the Rainbow

Helen Czerski ventures beyond the visible spectrum in the final (and best) episode in this vibrant little series, showing how electromagnetic radiation is so much broader than the narrow slice of reality we see with our eyes. Before delving into the details of UV, infrared and x-rays, Dr Czerski explores colour subjectivity by trying on a dress that recently divided the internet — to some it appeared blue and black, to others white and gold. It's a perfect fit. It's also a neat analogy of how people can have opposing views but both swear blind that their perspective is correct. The series ends with some amazing imaging techniques that show our bodies in a whole new light.

58m • 2015 • Colour: The Spectrum of Science

Colours of Life

Early Earth was a canvas for the vast new palette of the colours of life, with the diversity of human skin tones telling the story of how humanity spread and ultimately conquered the planet. Dr Helen Czerski explores the true masters of colour - which are often the smallest and most elusive - travelling to the mountains of Tennessee to witness the colourful mating display of fireflies, and revealing the marine creatures that can change the colour of their skin in order to hide from the world.

58m • 2015 • Colour: The Spectrum of Science

Colours Of Earth

In the first episode, Helen seeks out the colours that turned planet Earth multicoloured. To investigate the essence of sunlight Helen travels to California to visit the largest solar telescope in the world. She discovers how the most vivid blue is formed from sulfur atoms deep within the Earth's crust and why the presence of red ochre is a key sign of life. In gold, she discovers why this most precious of metals shouldn't even exist on the surface of the planet and in white, Helen travels to one of the hottest places on Earth to explore the role salt and water played in shaping planet Earth.

59m • 2015 • Colour: The Spectrum of Science

How to Make a Country Rich

If you were setting out to make a country rich, what kind of mindsets and ideas would be most likely to achieve your goals? We invent a country, Richland, and try to imagine the psychology of its inhabitants.

9m • 2015 • The School of Life

What is Reality?

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.

58m • 2011 • Horizon

Man on Mars: Mission to the Red Planet

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.

58m • 2014 • Horizon

Part 2

The series offers a fresh look at the science behind teeth and dentistry, and what we can all do to improve our oral health. The programmes feature patients undergoing treatment for missing or broken teeth, decay, gum disease, and a range of other problems – sometimes to the extreme. The series also features a strong public health message, with experiments on and information about everything from correct tooth brushing to the effectiveness (or otherwise) of over-the-counter tooth whitening kits.

57m • 2015 • The Truth About Your Teeth

Part 1

The series offers a fresh look at the science behind teeth and dentistry, and what we can all do to improve our oral health. The programmes feature patients undergoing treatment for missing or broken teeth, decay, gum disease, and a range of other problems – sometimes to the extreme. The series also features a strong public health message, with experiments on and information about everything from correct tooth brushing to the effectiveness (or otherwise) of over-the-counter tooth whitening kits.

57m • 2015 • The Truth About Your Teeth

What makes a genius?

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.

58m • 2010 • Horizon

The First 8 Weeks

Beginning with the first eight weeks when a single cell, no bigger than a speck of dust, transforms into a human foetus, the most sophisticated organism on the planet. This period is the most perilous time in the womb and determines the layout of body organs, when our heart makes its first beat, and when the length of our lives could be decided.

58m • 2015 • Countdown to Life: The Extraordinary Making of You

The Secret Rules of Modern Living: Algorithms

Without us noticing, modern life has been taken over. Algorithms run everything from search engines on the internet to satnavs and credit card data security - they even help us travel the world, find love and save lives. Professor Marcus du Sautoy demystifies the hidden world of algorithms. By showing us some of the algorithms most essential to our lives, he reveals where these 2,000-year-old problem solvers came from, how they work, what they have achieved and how they are now so advanced they can even programme themselves.

58m • 2015

Part 3

What is it that makes us human? Is it that we love, that we fight? That we laugh? Cry? Our curiosity? The quest for discovery? Driven by these questions, filmmaker and artist Yann Arthus-Bertrand spent three years collecting real-life stories from 2,000 women and men in 60 countries. Working with a dedicated team of translators, journalists and cameramen, Yann captures deeply personal and emotional accounts of topics that unite us all; struggles with poverty, war, homophobia, and the future of our planet mixed with moments of love and happiness.

93m • 2015 • Human

Part 2

What is it that makes us human ? Is it that we love, that we fight ? That we laugh ? Cry ? Our curiosity ? The quest for discovery ? Driven by these questions, filmmaker and artist Yann Arthus-Bertrand spent three years collecting real-life stories from 2,000 women and men in 60 countries. Working with a dedicated team of translators, journalists and cameramen, Yann captures deeply personal and emotional accounts of topics that unite us all; struggles with poverty, war, homophobia, and the future of our planet mixed with moments of love and happiness.

86m • 2015 • Human

Part 1

What is it that makes us human? Is it that we love, that we fight ? That we laugh ? Cry ? Our curiosity ? The quest for discovery ? Driven by these questions, filmmaker and artist Yann Arthus-Bertrand spent three years collecting real-life stories from 2,000 women and men in 60 countries. Working with a dedicated team of translators, journalists and cameramen, Yann captures deeply personal and emotional accounts of topics that unite us all; struggles with poverty, war, homophobia, and the future of our planet mixed with moments of love and happiness.

83m • 2015 • Human

Are Video Games Really that Bad?

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 revolutionise how we combat mental decline as we age.

59m • 2015 • Horizon

March to June

In this final episode we complete our journey, travelling back from the March equinox to the end of June. Kate Humble is in the Arctic at a place where spring arrives with a bang, whilst Helen Czerski chases a tornado to show how the earth's angle of tilt creates the most extreme weather on earth.

58m • 2012 • Orbit: Earths Extraordinary Journey

January to March

In this second episode we travel from January to the March equinox. Kate Humble gets closer to the Sun than she has ever been before, whilst Helen Czerski visits a place that gets some of the biggest and fastest snowstorms on Earth.

59m • 2012 • Orbit: Earths Extraordinary Journey

July to December

In this first episode they travel from July to the December solstice, experiencing spectacular weather and the largest tides on Earth. To show how the Earth's orbit affects our lives, Helen jumps out of an aeroplane and Kate briefly becomes the fastest driver on Earth.

58m • 2012 • Orbit: Earths Extraordinary Journey

What Happened Before the Big Bang

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.

58m • 2010 • Horizon

Cosmic Dawn: The Real Moment of Creation

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.

59m • 2015 • Horizon

Big Bang Aftershock

The discovery of gravity waves in early 2013 was huge news around the world ... and so was the retraction after the scientists realized they'd made a mistake. This is a dramatic human story of brave scientists and big science in action at the South Pole.

42m • 2015

Which Universe Are We In?

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?

58m • 2015 • Horizon

OCD: A Monster in my Mind

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.

58m • 2015 • Horizon

Are Health Tests Really a Good Idea?

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.

59m • 2015 • Horizon

The Trouble with Space Junk

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.

58m • 2015 • Horizon

For the Love of Physics (Walter Lewin's Last Lecture)

On May 16, 2011, Professor of Physics Emeritus Walter Lewin returned to MIT lecture hall 26-100 for a physics talk and book signing, complete with some of his most famous physics demonstrations to celebrate the publication of his new book For The Love Of Physics: From the End of the Rainbow to the Edge of Time - A Journey Through the Wonders of Physics, written with Warren Goldstein.

61m • 2014

Are We Alone

Brian Cox explores the ingredients needed for an intelligent civilisation to evolve in the universe - the need for a benign star, for a habitable planet, for life to spontaneously arise on such a planet and the time required for intelligent life to evolve and build a civilisation. Brian weighs the evidence and arrives at his own provocative answer to the puzzle of our apparent solitude.

59m • 2014 • Human Universe

Is Binge Drinking Really that Bad?

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.

59m • Horizon

Unafraid of the Dark

Description of the two Voyager probes sent for interstellar travel. Tyson ends the series by emphasizing Sagan's message on the human condition in the vastness of the cosmos & to encourage viewers to continue to explore and discover the undiscovered.

46m • Cosmos: A Spacetime Odyssey

The World Set Free

Degrasse discusses our nearest neighboring planet Venus and its climate, the climate change on Earth and if it is caused by humans.

42m • Cosmos: A Spacetime Odyssey

The Immortals

The Ship of the Imagination travels across the cosmos to discover the possibility of beings that live forever and explain why other civilizations perish. Then, visit the Cosmic Calendar of the Future and contemplate what lies ahead with a hopeful vision.

44m • Cosmos: A Spacetime Odyssey

The Electric Boy

Travel to 19th century England and meet Michael Faraday, a child of poverty who grew up to invent the motor and the generator. His ideas about electricity and discovery of magnetic fields changed the world and paved the way for future scientists to make giant strides in the world of high technology and instantaneous communication.

42m • Cosmos: A Spacetime Odyssey

The Lost Worlds of Planet Earth

The Ship of the Imagination embarks on a journey through space and time to grasp how the autobiography of the Earth is written in its atoms, its oceans, its continents and all living things. Later, American geologist Marie Tharp creates the first true map of Earth's ocean floor, and discovers microscopic life that exists deep beneath the ocean.

44m • Cosmos: A Spacetime Odyssey

Sisters of the Sun

Explores the violent cosmic phenomenon of supernovas, which on average occur once per galaxy per century or one billion times per year in the observable universe.

43m • Cosmos: A Spacetime Odyssey

The Clean Room

To determine the true age of the Earth, geochemist Clair Patterson developed the uranium-lead dating method to make an unprecedented discovery - calculating Earth's age of 4.5 billion years. But Patterson's groundbreaking discoveries were just beginning. Patterson made it his mission to draw public attention to the detrimental effects of lead in the environment and dedicated his career to fighting against the petroleum and chemical industry, eventually achieving public health's biggest victory of the 20th century.

44m • Cosmos: A Spacetime Odyssey

Deeper, Deeper, Deeper Still

The Ship of the Imagination ventures on an epic voyage to the bottom of a dewdrop to explore the universe on the smallest scale and observe exotic life forms invisible to the naked eye. Then, host Neil deGrasse Tyson explains the neural network in our brains which determine our sense of smell and memory, and later, he travels deep beneath the surface of the Earth to discover the most mysterious particle we know.

46m • Cosmos: A Spacetime Odyssey

Hiding in the Light

The Ship of the Imagination travels back in time to reveal 11th century Europe and North Africa during the golden age of Islam, when brilliant physicist Ibn al-Haytham discovered the scientific method and first understood how we see, and how light travels. Later, William Herschel discovers the infrared and the signature hidden in the light of every star, eventually unlocking one of the keys to the cosmos.

46m • Cosmos: A Spacetime Odyssey

A Sky Full of Ghosts

Explores how light, time and gravity affects our perception of the universe.

44m • Cosmos: A Spacetime Odyssey

When Knowledge Conquered Fear

Neil deGrasse Tyson sets off on the Ship of the Imagination to chase a single comet through its million-year plunge toward Sol. Later, Tyson visits the birth-place of Sir Isaac Newton and retraces the unlikely friendship between Newton and brilliant polymath Edmond Halley. It was Halley's patience and generosity which allowed Newton to conquer his fear of isolation and find the courage to publish his masterwork, "Principia Mathematica" which launched a scientific revolution.

46m • Cosmos: A Spacetime Odyssey

Some of the Things That Molecules Do

Artificial selection is one example, eyes another, of the well-documented and inescapable process of evolution--change in a population of species over time--by natural selection. These are some of the things that molecules do.

45m • Cosmos: A Spacetime Odyssey

Standing Up in the Milky Way

More than three decades after the debut of Carl Sagan's ground-breaking and iconic series, "Cosmos: A Personal Voyage," it's time once again to set sail for the stars. Host and astrophysicist Neil deGrasse Tyson sets off on the Ship of the Imagination to discover Earth's Cosmic Address and its coordinates in space and time. Viewers meet Renaissance Italy's Giordano Bruno, who had an epiphany about the infinite expanse of the universe. Then, Tyson walks across the Cosmic Calendar, on which all of time has been compressed into a year-at-a-glance calendar, from the Big Bang to the moment humans first make their appearance on the planet.

46m • Cosmos: A Spacetime Odyssey

Brains

In the final episode Dr Alice Roberts explores how our species, homo sapiens, developed our large brain; and asks why we are the only one of our kind left on the planet today?

58m • Origins of Us

Guts

In this second episode Dr Alice Roberts charts how our ancestors’ hunt for food has driven the way we look and behave today – from the shape of our face, to the way we see and even the way we attract the opposite sex.

58m • Origins of Us

Bones

In the first episode, Dr Alice Roberts looks at how our skeleton reveals our incredible evolutionary journey.

59m • Origins of Us

Dancing in the Dark: The End of Physics?

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.

59m • Horizon

Aftershock: The Hunt for Gravitational Waves

Horizon travels to the South Pole to tell the inside story of the greatest scientific quest of our time. In March 2014, a team of astronomers stunned the scientific world when they announced that their BICEP2 telescope at the South Pole had possibly detected a signal of “gravitational waves” from the early universe. This is the inside story of the hunt for gravitational waves from the beginning of time.

59m • Horizon

Climate Change: A Horizon Guide

Dr Helen Czerski delves into the Horizon archive to chart the transformation of a little-known theory into one of the greatest scientific undertakings in history.

58m • Horizon

Secrets of the Solar System

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.

59m • Horizon

Parallel Universes

Everything you're about to see here seems impossible and insane, beyond science fiction. Yet it's all true.

44m • Horizon

The End of God?

As the Pope ends his visit to Britain, historian Dr Thomas Dixon delves into the BBC's archive to explore the troubled relationship between religion and science. From the creationists of America to the physicists of the Large Hadron Collider, he traces the expansion of scientific knowledge and asks whether there is still room for God in the modern world.

58m • Horizon

The Americas

Dr. Alice Roberts investigates the possible routes taken by humans to reach the Americas.

58m • The Incredible Human Journey

Australia

Dr. Alice Roberts looks at our ancestors' seemingly impossible journey to Australia.

58m • The Incredible Human Journey

Europe

Looking at how our species coped with the rival Neanderthals and the Ice Age.

57m • The Incredible Human Journey

Asia

Dr. Alice Roberts travels to Northern Siberia to learn how hunter-gatherers survived there.

59m • The Incredible Human Journey

Out of Africa

In the first episode, Roberts introduces the idea that genetic analysis suggests that all modern humans are descended from Africans.

59m • The Incredible Human Journey

Don't Grow Old

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.

58m • Horizon

Survival

David discovers the plants that have evolved to shed their dependency on water enabling them to survive in the driest environments. The story begins at midnight in midsummer as David steps into the Princess of Wales Conservatory to witness the extraordinary nocturnal blooming of a cactus. The Queen of the Night, with its giant flowers, is the centre piece of a stunning symphony of cacti blooms that burst open in the desert (and at Kew) at night. In a mesmerizing 3D slow motion sequence, we discover the extraordinary connections between cacti and their natural ...

52m • 2012 • Kingdom of Plants

Solving the Secrets

David uses the latest 3D technology to explore a world beyond the confines of our human senses. He begins with the secret world of plant movement and uses sinister carnivorous plants to show just how active plants can be. Bladderwort utricularia is a pond-dweller that is among the fastest known, its traps snapping shut in less than a millisecond. As the seasons change, David demonstrates how plants operate on a different time scale to us; how they modify their lives according to the time of year. We discover insects' hidden links with plants, both as pests and ...

52m • 2012 • Kingdom of Plants

Life in the Wet Zone

David begins his journey inside the magnificent Palm House, a unique global rainforest in London. Here, he explores the extraordinary plants that are so well adapted to wet and humid environments and unravels the intimate relationships between wet zone plants and the animals that depend on them. It was in the wet zones of the world that plants first moved on to land and in the Waterlily House David reveals how flowers first evolved some 140 million years ago. Watching a kaleidoscope of breath-taking time-lapses of these most primitive of flowers swelling and blooming ...

52m • 2012 • Kingdom of Plants

The Illusion of Reality

How studying the atom forced us to rethink the nature of reality itself.

59m • Atom

The Key to the Cosmos

Jim Al-Khalili shows how investigation into the atom unravelled the mystery of creation.

58m • Atom

The Clash of the Titans

The story of the groundbreaking scientific discovery that everything is made from atoms.

58m • Atom

The Full Circle

In this highlights programme compiled from the recent Life Story series, David Attenborough brings us the universal story that unites each of us with every animal on the planet, the story of the greatest of all adventures - the journey through life. For each stage of life we see the most spectacular, beautiful or dramatic stories from the Life Story series.

57m • Life Story

Cities - Surviving the Urban Jungle

The city is built to keep untamed nature out, but nature cannot be pushed away.

58m • Human Planet

Rivers - Friend and Foe

Human Planet meets people for whom rivers can be both a risk to life and a lifeline.

58m • Human Planet

Grasslands - Roots of Power

A gallop across the Steppe with extraordinary 'born in the saddle' Mongolian horsemen.

58m • Human Planet

Mountains - Life in Thin Air

Film which explores the extraordinary ways in which people survive at extreme altitudes.

59m • Human Planet

Jungles - People of the Trees

A look at humans who live in the depths of the rainforest, a perilous environment.

58m • Human Planet

Arctic - Life in the Deep Freeze

Human Planet tells remarkable stories of people who make their homes in the Arctic.

58m • Human Planet

Deserts - Life in the Furnace

A look at how the eternal quest for water brings huge challenges and ingenious solutions.

59m • Human Planet

Oceans - Into the Blue

Documentary about how humans exploit the sea's riches with great ingenuity and bravery.

58m • Human Planet

Living Together

The last episode deals with the future of conservation. It begins by looking at previous efforts. The 'Save The Whales' campaign, which started in the 1960s, is seen to have had a limited effect, as whaling continues and fish stocks also decline.

58m • Planet Earth: The Future

Saving Species

The first programme asks if there really is an extinction crisis facing certain species.

58m • Planet Earth: The Future

Why Are We Here?

Brian Cox tackles the question that unites Earth's seven billion people - why are we here?

59m • 2014 • Human Universe

Revelations and Revolutions

How we finally came to understand the science of electricity.

58m • Shock and Awe: The Story of Electricity

The Age of Invention

How harnessing the link between magnetism and electricity transformed the world.

59m • Shock and Awe: The Story of Electricity

Spark

How pioneers unlocked electricity's mysteries and built strange instruments to create it.

59m • Shock and Awe: The Story of Electricity

Home

Brian Cox considers what it is about our world that makes it a home for life.

58m • Wonders of Life

Size Matters

In this episode, Brian travels round Australia to explore the physics of the size of life.

58m • Wonders of Life

Endless Forms Most Beautiful

In this film Brian asks how a lifeless cosmos can produce a planet of such varied biology.

59m • Wonders of Life

Expanding Universe

Prof Brian Cox visits the USA retelling evolutionary history and the origin of the senses.

59m • Wonders of Life

What is Life

Professor Brian Cox journeys to South-East Asia to understand how life first began.

59m • Wonders of Life

Off the Scale

Richard Hammond explores the astonishing miniature universe all around us.

59m • Richard Hammond's Invisible Worlds

Speed Limits

Using high-speed cameras, Richard reveals the world hidden in the time it takes to blink.

58m • Richard Hammond's Invisible Worlds

Courtship

David Attenborough explores the courtship displays of flame bowerbirds and pufferfish.

58m • Life Story

Power

To gain power an animal must find a way to rise through the ranks of its society.

58m • Life Story

Growing Up

The moment when all animals must strike out on their own in search of independence.

58m • Life Story

First Steps

Fur seals and flightless barnacle goose chicks fight to survive the challenges of infancy.

58m • Life Story

Out of Sight

Using new imaging technology, Richard Hammond journeys beyond the visible spectrum.

58m • Richard Hammond's Invisible Worlds

What is our Future?

In a powerful conclusion, Brian pieces together this story of creation that started with what Einstein called the 'happiest thought of his life' - the moment that he realised that gravity was far stranger than anyone had imagined. In an incredible experiment inside the largest vacuum chamber, Brian reveals how Einstein formulated a new theory of gravity, which ultimately took us back to the big bang. And how in doing so, we humans found our true place in space and time.

58m • 2014 • Human Universe

Place in Space and Time

Brian reveals how - as our exploration of the cosmos has deepened - we have even been able to piece together how the universe itself began.

58m • 2014 • Human Universe

Apeman - Spaceman

Beginning in Ethiopia, Professor Brian Cox discovers how the universe played a key role in our ascent from apeman to spaceman by driving the expansion of our brains. But big brains alone did not get us to space.

58m • 2014 • Human Universe

Home

We are living in exceptional times. Scientists tell us that we have 10 years to change the way we live, avert the depletion of natural resources and the catastrophic evolution of the Earth's climate.

93m • 2009

How Many People Can Live on Planet Earth

In a Horizon special, naturalist Sir David Attenborough investigates whether the world is heading for a population crisis.

47m • 2009 • Horizon