With more than half of all primate species threatened with extinction, this episode follows scientists and conservationists working to understand and protect our closest animal relatives through groundbreaking research and conservation efforts.
A look at the extraordinary social lives of primates. From devoted fathers and protective relatives to lifelong friendships and complex hierarchies, the episode explores how family bonds help primates survive and prosper.
Primates have adapted to survive everywhere from mountains and forests to cities and savannahs. This episode reveals the ingenious strategies used by monkeys, apes, and lemurs to find food, avoid predators, and thrive in some of the world's most challenging environments.
An engaging overview of the history of money, exploring how societies evolved from barter systems to coins, paper currency, and modern financial systems. The video highlights the key developments that shaped trade, economics, and the way people exchange value throughout history.
2026 • Economics
Discover how restoring your natural "primal posture" can help reduce back pain, neck pain, and other common musculoskeletal problems
Hannah takes a drive to the National Highways control centre for the UK’s busiest motorway to meet the team that keep the motorways running 24/7.
S3E5 • The Secret Genius of Modern Life • 2025 • Technology
The rise of the smart doorbell is one of the great tech success stories of the 21st century. Hannah heads to Los Angeles to take a deep dive into doorbell history and talk to market leaders Ring.
S3E4 • The Secret Genius of Modern Life • 2025 • Technology
Hannah uncovers the wild origins of the modern-day rollercoaster and gets the inside story on the UK’s newest, tallest and fastest coaster – Thorpe Park's Hyperia.
S3E3 • The Secret Genius of Modern Life • 2025 • Technology
Hannah hits the production line with appliance giants Bosch to find the lifeblood at the heart of every fridge and gets a lesson in carrot droop.
S3E2 • The Secret Genius of Modern Life • 2025 • Technology
Hannah takes a look at the air fryer – a device that is rapidly taking over people's kitchens, cooking up everything from bread rolls to baked Alaska and almost making ovens obsolete.
S3E1 • The Secret Genius of Modern Life • 2025 • Technology
Hannah goes behind the scenes to look at the technology behind the lift, entering a 246m high lift shaft to test everything from the brakes to her own fear of heights.
S2E6 • The Secret Genius of Modern Life • 2023 • Technology
Headphones: these marvels of miniaturisation are worn by 30 million people in the UK. Hannah Fry visits Bose to find out how the teeny earbud tech works and meets the human testers with ‘golden ears’.
S2E5 • The Secret Genius of Modern Life • 2023 • Technology
For decades some have suspected that there might be others out there, intelligent beings capable of communicating with us, even visiting our world. It might sound like science fiction, but today scientists from across the globe are scouring the universe for signals from extraterrestrials. Scientists have been searching the cosmos for strange signals like the Lorimer Burst for more than 50 years. The film ends with scientists' latest search for extraterrestial 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 that some scientists believe it might be surrounded by a Dyson Sphere, a vast energy collector built by advanced aliens.
Dame Dr Maggie Aderin-Pocock begins her search for extraterrestrial life with an exploration of our nearest neighbour, and her favourite space rock, the moon.
S1E1 • Royal Institution Christmas Lectures: Is There Life Beyond Earth? • 2025 • Astronomy
David Attenborough reveals how, by pushing themselves and their bodies to the limit, mammals have found remarkable ways to survive in the hottest places on earth. In South America, thirsty capuchins need all their natural curiosity as they search for water on the forest floor. Camels roam the vast outback of Australia, where they can go for weeks without water thanks to their distinctive hump as an energy store. White sifaka lemurs hug trees to avoid the heat in Madagascar's spiny forest and the echidna has an even stranger way of keeping cool - it blows snot bubbles.
S1E5 • Mammals with David Attenborough • 2024 • Nature
The final programme comes from St Abbs in Scotland and looks at whether herring are making a comeback, and there's exploration into the lesser-known British coral reefs.
S1E5 • Blue Planet UK • 2019 • Nature
The Big Bang is when the cosmos started and time itself began. With stunning animation based on space telescope images, NOVA winds back the ages to discover new clues about this ultimate genesis and what happened in the universe’s first few seconds.
S1E5 • Nova: Universe Revealed • 2021 • Astronomy
Fur seals and flightless barnacle goose chicks fight to survive the challenges of infancy.
S1E1 • Life Story • 2014 • Nature
Is there any way to slow or even prevent the ravages of time? Veteran presenter Johnny Ball looks back over the 45 years that Horizon, and he, have been on air to find out what science has learned about how and why we grow old. Charting developments from macabre early claims of rejuvenation to the latest cutting-edge breakthroughs, Johnny discovers the sense of a personal mission that drives many scientists and asks whether we are really any closer to achieving the dream of immortality.
The home fitness revolution has exploded into a multibillion-dollar industry. Are home workouts a healthy habit - or just hype?
S2E8 • History 101 • 2022 • Health
Our skin is the largest organ in our bodies, with a surface area of about 20 square feet in adults. When we are cut or wounded, our skin begins to repair itself through a complex, well-coordinated process. Sarthak Sinha takes us past the epidermis and into the dermis to investigate this regenerative response.
We hear about calories all the time: How many calories are in this cookie? How many are burned by doing 100 jumping jacks, or long-distance running, or fidgeting? But what is a calorie, really? And how many of them do we actually need? Emma Bryce explains how a few different factors should go into determining the recommended amount for each person.
Good to know as you travel to the Antipodes - Australia has the most venomous snakes and spiders in the world. But, if you’re bitten, can you rely on anti-venom? Dr Graham Phillips investigates the effectiveness of anti-venom.
3/10 • Catalyst: Season 1 • 2015 • Health
Prince William, Sir David Attenborough and astronaut Naoko Yamazaki hear the personal stories of people who are directly affected by air pollution and look at possible solutions.
S1E3 • The Earthshot Prize Repairing Our Planet • 2021 • Environment
"Eighty percent of us now live in an urban setting, and I think that the solution to our environmental problems is not to say 'we've got break down cities and get everybody back to the land' – that would be disastrous – but we have to make cities our major habitat…we have to make them more in balance, I think, with the rest of the things that keep us alive." David Suzuki Cities are where most Canadians live. And, as we head into the future, how we adapt to the needs of expanding cities will have a huge impact on their livability. Food, land use, housing, energy, waste – how we tackle these issues will determine whether our cities evolve, or whether they decline. In a new instalment of Suzuki Diaries, David and his daughter, Sarika, set out to discover whether some of Canada's biggest cities are ready for the challenges of the future.
S51E14 • The Nature of Things • 2012 • Environment
Why do animals perfectly adapted to island life give up the ghost when new species arrive?
S1E5 • South Pacific • Environment
World War 3 breaks out & a nuclear nightmare becomes reality as thousands of hydrogen bombs destroy the world's greatest cities. Resulting in a Nuclear Winter, plunging the planet into a sudden Ice Age.
S1E4 • Doomsday: 10 Ways the World Will End • 2016 • Environment
We explore the meaning of 'homo sapiens' (meaning 'wise being') and hear what experts say about the importance of using wisdom as a guiding value to address climate change, income inequality, discrimination, and more. This short film features Dr. Jane Goodall, Vandana Shiva, Chris Hedges, Clayton Thomas-Muller, Dacher Keltner, Ernest Callenbach, and John Perkins.
Thought Café • 2021 • Environment
Ice may be nothing more than frozen water but, as Iain explains, it holds extraordinary power. Descending 150m down a frozen waterfall, he sees a glacier in action from below and discovers why the huge Jacobshaven glacier is retreating, he shows how it shaped our past and may now threaten our future.
In the 15th century, an inventor in a workshop in Strasburg came up with a machine that would eventually change the history of the entire world and shake a religion to its core. The choice of the first work to be printed is an astute one: Saint Jerome’s Latin version of the Bible.
S2E6 • Butterfly Effect • 2018 • History
The Battle for Berlin has begun. Step by step, the soon-to-be victorious powers advance. On 30 April, the Red Flag flies over the Reichstag and Adolf Hitler takes his own life. Another seven days pass before the Wehrmacht disassembles. National Socialism is finally beaten, along with Germany and Berlin. But for many, the fall of Nazism spells liberation rather than defeat.
S1E2 • Berlin 1945: Diary of a Metropolis • 2020 • History
Drama-documentary about Richard the Lionheart. Was he the heroic warrior of Robin Hood? Or was he just a greedy thug who wanted to loot the Holy Land? Revisionist history suggests that Richard was neither- an extremist Christian, he struggled to lead a fractious international coalition against an impenetrable Muslim stronghold. Saladin used scorched earth tactics which spread dissension through the Crusaders' ranks. Gradually, Richard's coalition fell apart and he returned a failure. In 1191, the English King Richard the Lionheart is just one of several leaders of the Third Crusade to retake Jerusalem. His adversary, the aging Egyptian statesman and empire founder Salah-ad Din, had conquered the pilgrimage city a few years earlier. Before the decisive battle of Arsuf, all signs actually point to a dramatic defeat for the crusaders. But Richard keeps his troops together - it will be the greatest triumph of the warrior king.
S1E5 • Warriors: Great Men of History • 2007 • History
Austrian physicist Erwin Schrödinger, one of the founders of quantum mechanics, posed this famous question: If you put a cat in a sealed box with a device that has a 50% chance of killing the cat in the next hour, what will be the state of the cat when that time is up?
A film following a young meerkat queen living in the harsh beauty of the Makgadikgadi salt pans. If her new pups are to survive, she must unite her family in the face of rivals, predators and immense dust storms.