Horizon Christmas Special: Hand me my Sword, Humphrey

Season 0 - Episode 1

It is Christmas Day in the house of Hastings. The time (the 1830s), the place (a suburban Victorian home), and the atmosphere (after the pud...

The Case of the Ancient Astronauts

Season 0 - Episode 2

In this special episode, Horizon reports on Erich von Däniken and his theories about astronauts visiting Earth long ago.

The Mind's Eye

Season 0 - Episode 3

This special episode of Horizon shows the latest advances in research into how the visual eyesight system of humans and animals work.

25 Years in Space

Season 0 - Episode 4

This Horizon special episode recalls the highlights of the past 25 years of the space age.

Biology at War: The Mystery of Yellow Rain

Season 0 - Episode 5

In the first part of this special two-part series, Horizon reports on the yellow rain problem in South-east Asia.

Beyond the Moon

Season 0 - Episode 6

In this special episode, Horizon brings you a report on space exploration and exploitation. The first half of this episode looks back at the...

Biology at War: A Plague in the Wind

Season 0 - Episode 7

This is the second part, of a two-part special series. In this episode, Horizon looks at the history of germ warfare and the research still ...

Twenty-First Birthday

Season 0 - Episode 8

Horizon celebrates twenty one years of work, achievement, and awards with a birthday compilation of highlights from past episodes.

Halley's Comet - The Apparition

Season 0 - Episode 9

This report by Horizon looks into how the apparitions of Halley's comet came to be predicted so accurately.

Halley's Comet - The Encounter

Season 0 - Episode 10

Special on Halley's comet

The Diary of Discovery

Season 0 - Episode 11

This Horizon special follows the 20 months preparation of the five astronauts who are to man the American space shuttle Discovery launching ...

Making an Honest Fiver

Season 0 - Episode 12

This Horizon special explores the production and processes behind the scenes of the new five pound note to be launched on the 7the June, 199...

Red Star in Orbit: The Invisible Spaceman

Season 0 - Episode 13

This Horizon special episode is part one of a three part series on the projects, cosmonauts, and engineers involved in the Soviet Union spac...

Red Star in Orbit: The Dark Side of the Moon

Season 0 - Episode 14

This Horizon special episode is part two of a three part series on the projects, cosmonauts, and engineers involved in the Soviet Union spac...

Red Star in Orbit: The Mission

Season 0 - Episode 15

This Horizon special episode is the last part of a three part series on the projects, cosmonauts, and engineers involved in the Soviet Union...

A Close Encouter of the Second Kind

Season 0 - Episode 16

This Horizon special program explores what happened when the "Giotto" explorer spacecraft passed within 100 kilometres of Halley's Comet.

Hide and Seek in Iraq

Season 0 - Episode 17

This documentary by Horizon reveals the disturbing discoveries made in over 40 inspections looking for weapons of mass destruction in Iraq.

The Truth About Sex

Season 0 - Episode 18

This report by Horizon brings you the results of a landmark survey about sex.

Assault on the Male

Season 0 - Episode 19

This Horizon special looks at the mysterious changes in wildlife that has been reported in the USA and that man's reproduction may also be a...

30th Anniversary - The Far Side

Season 0 - Episode 20

Horizon celebrates its 30th birthday by checking on some of the scientific predictions of last three decades.

Twice Born

Season 0 - Episode 21

In this special episode, Horizon examines the use of foetal surgery for life saving operations.

Einstein: The Miracle Year

Season 0 - Episode 22

First part of a two-part drama looking at the work and life of Albert Einstein. Mixes archival material with dramatised sequences. Looks at ...

Einstein: Fame

Season 0 - Episode 23

This is the second part of a two-part Horizon series on Albert Einstein looking at Einstein's life and work. This program deals with the bre...

BSE: The Invisible Enemy

Season 0 - Episode 24

First part of a two-part investigation into BSE. Looks into the scientific confusion and official bungling surrounding the problem, which al...

BSE: The Human Experiment

Season 0 - Episode 25

This is part two of a two-part Horizon series on Bovine Spongiform Encephalopathy (BSE), more commonly known as "mad cow" disease, and how i...

Molecules With Sunglasses (Update)

Season 0 - Episode 26

An update on the earlier 1992 episode, and the continuing story of the Carbon 60 molecule.

Ice Mummies: The Ice Maiden

Season 0 - Episode 27

Follows archeologist Natalya Polosmok as she journeys to the Altay Mountains in southern Siberia to search for traces of an ancient people k...

Ice Mummies: A Life in Ice

Season 0 - Episode 28

In this second part of the Ice Mummies trilogy, attention turns to Ötzi, the Neolithic man plucked with an ice pick and some not inconsidera...

Ice Mummies: Frozen in Heaven

Season 0 - Episode 29

This is the bizarre and fascinating story of the remains of Inca culture, frozen for posterity high in the mountains of the Andes. Evidence ...

Computers Don't Bite, Inside the Internet

Season 0 - Episode 30

Antarctica: The Ice Lives

Season 0 - Episode 31

This is part one of a three-part Horizon special about the scientists and others who became explorers in the earth's final frontier, Antarct...

Antarctica: The Ice Forms

Season 0 - Episode 32

This is part two of a three-part Horizon special about the scientists and others who became explorers in the earth's final frontier, Antarct...

Antarctica: The Ice Melts

Season 0 - Episode 33

This is part three of a three-part Horizon special about the scientists and others who became explorers in the earth's final frontier, Antar...

Crash

Season 0 - Episode 34

This programme traces the lessons learned from a century of road fatalities. How have car makers learnt to predict the injuries their design...

Darwin: The Legacy

Season 0 - Episode 35

Longitude

Season 0 - Episode 36

In this documentary special, Horizon explores how to solve the problem of sailors being unable to pin-point their exact east-west position o...

Fat Files: Born to Be Fat

Season 0 - Episode 37

Horizon presents a three-part series focusing on weight-gain, dieting, and eating disorders. In this episode, there is scientific proof that...

Fat Files: Fixing Fat

Season 0 - Episode 38

Horizon presents a three-part series focusing on weight-gain, dieting, and eating disorders. In this episode, Horizon examines the shift awa...

Fat Files: Living on Air

Season 0 - Episode 39

Horizon presents a three-part series focusing on weight-gain, dieting, and eating disorders. In this episode, Horizon looks at the eating di...

Atlantis Uncovered

Season 0 - Episode 40

This is part one of a two-part special Horizon series about Atlantis. In this episode, Horizon explores the mystery of whether Atlantis real...

Atlantis Reborn

Season 0 - Episode 41

This is part two of a two-part special Horizon series about Atlantis. In this episode, Horizon puts Graham Hancock's controversial theories ...

Life and Death in the 21st Century: Living Forever

Season 0 - Episode 42

Will we find the magic formula that allows us to live forever in the 21st Century?

Life and Death in the 21st Century: Future Plagues

Season 0 - Episode 43

Ancient diseases we thought we had defeated are returning to haunt us, and plagues of new viruses and bacteria are now emerging.

Life and Death in the 21st Century: Designer Babies

Season 0 - Episode 44

Will we ever be able to hand-pick genes to manufacture our own tailor-made baby?

Inside the Internet

Season 0 - Episode 45

Life on Mars

Season 0 - Episode 46

Horizon explores how the search for Martians is hotting up.

Destination Mars

Season 0 - Episode 47

Tantalising new evidence has emerged that life could exist on Mars. But to find out for sure humans will have to journey to this dry, frozen...

What Sank the Kursk?

Season 0 - Episode 48

In August 2000, the Russian submarine, the Kursk, sank with the loss of 118 lives. It was a tragedy which shocked the world. But to many the...

First Olympians: A Horizon Special

Season 0 - Episode 49

In this documentary, Horizon reports on a skeleton was found 50 years ago in Southern Italy. The bone structure suggests the owner was an an...

Everest: Doctors in the Death Zone (1)

Season 0 - Episode 50

A team of doctors conducts potentially life-saving experiments in Horizon's 'death zone' This two-part special follows a team of doctors co...

Everest: Doctors in the Death Zone (2)

Season 0 - Episode 51

A team of doctors conducts potentially life-saving experiments in Horizon's 'death zone' This two-part special follows a team of doctors co...

Lost Horizons: The Big Bang

Season 0 - Episode 52

Professor Jim Al Khalili delves into over 50 years of the BBC science archive to tell the story behind the emergence of one of the greatest ...

How Mad Are You? (1)

Season 0 - Episode 53

First of a two-part special. Ten volunteers have come together for an extraordinary test. Five are 'normal' and the other five have been off...

How Mad Are You? (2)

Season 0 - Episode 54

Second part of the special documentary considering where the line between sanity and madness lies as ten volunteers come together for an ext...

40 Years on the Moon

Season 0 - Episode 55

Professor Brian Cox takes a look through nearly 50 years of BBC archive at the story of man's relationship with the Moon.

Pandemic: A Horizon Guide

Season 0 - Episode 56

In the wake of the swine flu outbreak, virologist Dr Mike Leahy goesw back over 50 years of BBC archives to explore the history of pandemics...

Mars: A Horizon Guide

Season 0 - Episode 57

The intriguing possibility of life on Mars has fuelled man's quest to visit the Red Planet. Drawing on 45 years of Horizon archive, space ex...

How Many People Can Live on Planet Earth?

Season 0 - Episode 58

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

Diet: A Horizon Guide

Season 0 - Episode 59

Dr Susan Jebb takes a look through nearly fifty years of amazing BBC archive of mankind's relationship with what we eat, charting the shift ...

The End of God? A Horizon Guide to Science and Religion

Season 0 - Episode 60

As the Pope ends his visit to Britain, historian Dr Thomas Dixon delves into the BBC's archive to explore the troubled relationship between ...

What Makes Us Clever? A Horizon Guide to Intelligence

Season 0 - Episode 61

Dallas Campbell delves into the Horizon archive to discover how our understanding of intelligence has transformed over the last century. Fro...

Japan Earthquake: A Horizon Special

Season 0 - Episode 62

Professor Iain Stewart examines the powerful geological forces that unleashed the devastating Japanese earthquake, and explores how the rele...

The Space Shuttle: A Horizon Guide

Season 0 - Episode 63

In 2011, after more than 30 years of service, America's space shuttle will take to the skies for the last time. Its story has been character...

The End of the World? A Horizon Guide to Armageddon

Season 0 - Episode 64

Our understanding of the world around us is better now than ever before. But are we any closer to knowing how its all going to end? Dallas ...

Carrot or Stick? A Horizon Guide to Raising Kids

Season 0 - Episode 65

Child psychologist Laverne Antrobus delves into the Horizon archive to find out how science has shaped our approach to parenting and educati...

Extinct: A Horizon Guide to Dinosaurs

Season 0 - Episode 66

Dallas Campbell explores how mankind's understanding of dinosaurs has developed since the 1970s. He reveals how technological advances led t...

The Hunt for Higgs: A Horizon Special

Season 0 - Episode 67

Horizon goes behind the scenes at CERN to follow one of the most epic and expensive scientific quests of all time: the search for the Higgs ...

Woof! A Horizon Guide to Dogs

Season 0 - Episode 68

Dallas Campbell looks back through the Horizon archives to find out what science can tell us about our best friend the dog, and whether new ...

The Hunt for AI

Season 0 - Episode 69

Marcus Du Sautoy wants to find out how close we are to creating machines that can think like us: robots or computers that have artificial in...

Stuff: A Horizon Guide to Materials

Season 0 - Episode 70

Engineer Jem Stansfield looks back through the Horizon archives to find out how scientists have come to understand and manipulate the materi...

Blink: A Horizon Guide to the Senses

Season 0 - Episode 71

Kevin Fong looks back through 40 years of Horizon archives to explore what science has revealed about methods of perception. He discovers wh...

Immortal? A Horizon Guide to Ageing

Season 0 - Episode 72

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 ...

Mission to Mars: A Horizon Special

Season 0 - Episode 73

Horizon goes behind the scenes at NASA as they countdown to the landing of a 2.5 billion-dollar rover on the surface of Mars. In six days ti...

The Final Frontier: A Horizon Guide to the Universe

Season 0 - Episode 74

Dallas Campbell looks back through almost 50 years of the Horizon archives to chart the scientific breakthroughs that have transformed our u...

The Truth About Meteors: A Horizon Special

Season 0 - Episode 75

On a bright, cold morning on 15th February 2013, a meteorite ripped across the skies above the Ural mountains in Russia, distintegrating int...

Mend Me: A Horizon Guide to Transplants

Season 0 - Episode 76

Transplant surgery has now reached incredible heights, from achieving full face transplants to growing organs in the lab. This Horizon Guide...

Tomorrow's World: A Horizon Special

Season 0 - Episode 77

Liz Bonnin delves in to the world of invention, revealing the people and technologies set to transform all our lives. She examines the condi...

What's Killing Our Bees? A Horizon Special

Season 0 - Episode 78

Changes in the weather, pesticides, and even a virus have all all been blamed for the ongoing mass deaths of bees Bill Turnbull meets the sc...

Comet of the Century: A Horizon Special

Season 0 - Episode 79

It was hoped that Comet ISON could be the brightest and most spectacular comet for a generation. After travelling towards the sun for ten th...

The £10 Million Challenge

Season 0 - Episode 80

To celebrate its 50th birthday, Horizon invites the public to play a role in tackling the greatest challenges facing science today. This spe...

The Transit of Venus: A Horizon Special

Season 0 - Episode 81

Liz Bonnin presents a Horizon special about a rare and beautiful event in our solar system, one that we should all be able to see for oursel...

The Great British Drought

Season 0 - Episode 100

Something peculiar has happened to Britain's weather. During the last two months we have heard frequent stories of forest fires, dried-up re...

Festival 77: Horizon 2002

Season 0 - Episode 101

Horizon theorizes how life could be in 2002, using extracts from previous Horizon episodes.

Darwin's Dream

Season 0 - Episode 102

Darwin's theory of evolution transformed our view of the world. But what would he think of the progress we have made since?

A Killer in the Village - Update

Season 0 - Episode 103

An updated report on AIDS, a catastrophic collapse of the immune system that leads to a bizarre range of cancers and potentially fatal infec...

Life Story

Season 0 - Episode 104

A Horizon special dramatizing the race at the University of Cambridge in 1951 for the discovery of DNA.

Sex: A Horizon Guide

Season 0 - Episode 105

Alice Roberts looks through 45 years of Horizon archive material to see how science came to understand sex, strived to solve our problems wi...

Climate Change: A Horizon Guide

Season 0 - Episode 106

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

The Mystery of Murder: A Horizon Guide

Season 0 - Episode 107

Michael Mosley uses the BBC archives to chart scientists' progress as they probed the mind of the murderer to try to understand why people k...

The Horizon Guide to AI

Season 0 - Episode 108

Documentary looking at the perception of AI from 1964 to the present day. Can we be optimistic about all that AI can deliver - or fearful of...

Tim Peake Special - How to be an Astronaut

Season 0 - Episode 109

Astronaut Tim Peake's video diary of the two years leading up to his arrival at the International Space Station in December 2015.

Jimmy Carr and the Science of Laughter

Season 0 - Episode 110

Comedian Jimmy Carr takes over Horizon for this one-off special programme, produced as part of BBC2's sitcom season. Jimmy turns venerable ...

Horizon Special: The Vaccine

Season 0 - Episode 111

The extraordinary inside story of the biggest scientific challenge of our age - following a small band of vaccine scientists around the worl...

The Life and Times of El Niño

Season 0 - Episode 112

The Life and Times of El Niño combines history and science to show how this meteorological monster has affected global economy and political...

Impact! A Horizon Guide to Plane Crashes

Season 0 - Episode 113

It's a macabre paradox, but almost every advance in aviation safety has been driven by a crash. After every crash, investigators determine i...

Impact! A Horizon Guide to Car Crashes

Season 0 - Episode 114

In the 1950s up to 8,000 people died every year on the roads in this country - a truly horrific figure. Thankfully it has now fallen to arou...

Cat Watch 2014 - A Cat's Eye View

Season 0 - Episode 115

Playful pets, fearsome fighters or deadly hunters? Millions of us have cats in our homes, yet we know very little about them. In this series...

Cat Watch 2014 - The Lion in Your Lap

Season 0 - Episode 116

The second episode of this unique scientific study reveals the wild side of pet cats. Using GPS trackers and cat cameras, they show how thes...

Cat Watch 2014 - Cat Talk

Season 0 - Episode 117

In the final episode of this groundbreaking scientific study, Liz Bonnin and a team of scientists reveal the secret language of our cats, th...

What's The Right Diet For You? Part 1

Season 0 - Episode 118

Instead of reaching for the latest fad diet, the best way to lose weight successfully is a personalised approach - diets tailored to your in...

What's The Right Diet For You? Part 2

Season 0 - Episode 119

It is time to see if personalised dieting will work in normal life. The volunteers have been given one of three diets to follow - based on t...

What's The Right Diet For You? Part 3

Season 0 - Episode 120

So far the volunteers have successfully been losing lost weight, but now the honeymoon period is over. It is the final two months of the die...

Journey to the Moon: A Horizon Special

Season 0 - Episode 121

Professor Brian Cox takes a journey through the BBC science archive to explore the story of mankind's relationship with the moon, from James...

Alastair Campbell: Depression and Me

Season 0 - Episode 122

In an intensely personal and often surprising film for BBC Two, Alastair Campbell candidly talks about his experience living with depression...

Ice Station Antarctica: Part One

Season 0 - Episode 123

BBC weatherman Peter Gibbs makes an emotional return to Antarctica, years after he lived and worked at the British Antarctic Survey's Halley...

Ice Station Antarctica: Part Two

Season 0 - Episode 124

BBC weatherman Peter Gibbs's return to Antarctica becomes something of a rescue mission. The British Antarctic Survey reveals how it will sa...

Coronavirus Special - Part 1

Season 0 - Episode 125

Investigating the scientific facts and figures behind the biggest public health crisis in living memory as a new coronavirus takes an unprep...

Coronavirus Special - Part 2

Season 0 - Episode 126

Dr Chris van Tulleken, Dr Hannah Fry and Michael Mosley examine the latest research and explore some of the big questions about the new coro...

Coronavirus Special - What We Know Now

Season 0 - Episode 127

In this third Horizon special, Dr Chris Van Tulleken is joined by his brother Xand and Dr Guddi Singh to take us through the latest developm...

Horizon Special: The Vaccine

Season 0 - Episode 128

The extraordinary inside story of the biggest scientific challenge of our age - following a small band of vaccine scientists around the worl...

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Season 0 - Episode 999