BBC Horizon Guide

This pages will contain short episode descriptions for more than 1,200 episodes of the BBC documentary series Horizon, which dates back to the mid-1960s. Please be aware that information contained within the description generally relates to the episode content as it was aired at the time, and facts may have changed since the show was broadcast.

Note that the episodes are listed in alphabetical rather than broadcast order.

10,000 Tombs

10 Things You Need To Know About The Future

A look at ten topic items which will impact human life in the future surrounding science and technology. The items include increasing human mortality, the science of the brain, climate change and changing weather, gene therapy and curing cancer, automation of work, future power generation, cyborgs, the next extinction event, the flying car, and the difficulty of predicting the future.

25 Years in Space

30th Anniversary, The Far Side

40 Years of Murder

40 Years on the Moon

70 Million Animal Mummies: Egypt's Dark Secret

A Bulldozer Through Heaven

A Candle to Nature

A Case of Depression

A Case of Priority

A Child of Our Own

A Child's Guide to Languages

A Close Encounter of the Second Kind

A Code in the Nose

A Cruel Inheritance


Adam or Eve?

Addicted to Painkillers? Britain's Opioid Crisis

ADHD and Me with Rory Bremner

A Disease of Our Time, Heart Attacks

A Disease of Our Time, Stress

A Fair Share of What Little We Have

African Medicine

After Apollo

After Chernobyl, Closer to Home

Aftershock: The Hunt for Gravitational Waves

After the Flood

After the Iron Age

Against the Clock

A Game of War

A Good Test?

A Handful of Sugar with a Pinch of Salt

A Home Like Ours..., A Story of Four Children

AIDS: A Quest for a Cure

AIDS, A Strange and Deadly Virus

AIDS, Behind Closed Doors

Air Crash Detective

Air Crash, The Burning Issue

Air Crash, The Deadly Puzzle


Air Safety, The Unknown Factor

A Is for Atom, B Is for Bomb

A Killing Rain

Alan and Marcus Go Forth and Multiply

A Land for All Reasons

Alaskan Pipe Dream

A Lesson for Teacher

Aliens from Mars

Organic compounds were found in a meteorite, though the discovery was eventually shown to be a mistake when it was confirmed the lifeforms were actually contamination from Earth. With a further discovery of another meteorite in Antarctica containing organic compounds in the 1990s, the rock is believed to be from own neighbour, Mars and has set scientists back on a quest to identify life in the solar system.

All Creatures Great and Small

Allergic to the Twentieth Century

Allergies: Modern Life and Me

Allergy Planet

A Man of Two Visions / The Scientist Applied

A Mathematical Mystery Tour

A Matter of Self Defence

A Measure of Uncertainty

A Mediterranean Prospect

A Miracle for Cancer?

A Mission to Heal

A Much Wanted Child

An Affair of the Heart

Anatomy of an Avalanche

Anatomy of a Volcano

In May 1980, Mount St Helens erupted and Dave Crockett also became another victim of the disaster when he was caught in an ash cloud. The predicted eruption was observed by a number of scientists who were keen to analyse the event in person, though it proved to be particularly violent as the pyroclastic flow blasted out a whole side of the volcano, and caused the deaths of fifty-seven people and significant property damage, as well as a lasting legacy on the environment.

And Where Will the Children Play?

An Element of Mystery

A New Green Revolution?

A Newsday Revolution

An Expensive Theology

An Experiment to Save the World

A Nice Sort of Accident to Have

An Ingenious Man, Sir H. John Baker

A Noah's Ark for Europe

A Normal Face

Antarctica: Ice Station Rescue

Following the British Antarctic Survey and the mission to save the Halley VI research station during the Antarctic summer of 2016 and 2017. The station is located on the Brunt ice shelf which is destined to break off, with an ice chasm named Chasm 1 heading straight for the structure. The episode follows the logistical challenge to move the station twenty-three kilometres across the ice to a safer location.

An Unholy Scramble

A Perfect Oil Spill

A Prize Discovery

A Question of Sport...

A Question of Trust

A Race Against Time

Archimedes' Secret

Are Health Tests Really a Good Idea?

Are Video Games Really That Bad?

Are We Alone in the Universe?

Are We Still Evolving?

Are You a Racist?

Are You Doing This for Me Doctor?

Are You Good or Evil?

A Scientist Looks at Religion

A Smile for the Crocodile

Aspects of Alcohol

A Spoonful of Roughage

A Sporting Chance

Assault on the Male

Asteroids - The Good, the Bad and the Ugly

A Time to Be Born

Atlantis Reborn Again

Atlantis Special Edition Part 1: Atlantis Uncovered

Atlantis Special Edition Part 2: Atlantis Reborn

This topics of this episode were revisited in a follow-up episode, aired in December 2000, entitled Atlantis Reborn Again after complaints by Graham Hancock and Robert Bauval.

A Touch of Sensitivity

A Treasury of Trees

A True Madness

Auschwitz, The Blueprints of Genocide

Avalanche: Making a Deadly Snowstorm

Averting Armageddon

Scientists continue to research the potential of an asteroid strike on Earth, and the effects it could have, along with ways an impact could be mitigated. Looking at several recorded asteroid entries into Earth's atmosphere, questions are asked as to how long Earth, and in particular built-up locations will remain lucky after the impact of comet Shoemaker-Levy 9 hitting Jupiter in July 1994 which showed us that the solar system is still developing.

A Vital Poison

Awakening the Frozen Addicts

A War on Science

A Week Without Lying: The Honesty Experiment

A Whisper from Space

A Whole New Medicine

A Wonderful Life

A World of Their Own

Back from the Dead

Bags of Life

Battered Baby, 1: From Generation to Generation

Battered Baby, 2: Breaking the Chain

Battle of the Brains

Beersheva Experiment

Before Babel

Behind the Horoscope

Being Transgender

Believe Me


Better Mind the Computer

Beyond a Joke

Beyond the Milky Way

Beyond the Moon

With John F. Kennedy's promise to land a man on the moon, a look back is taken at the scientific and technological achievement the event was, along with the impact it had on the world at the time. As interest in the Apollo missions faltered and the cost to the taxpayer was processed, questions have been asked about what lies ahead for NASA and the future of the United States in space with the focus on the space shuttle and space station projects.

Billion Dollar Bubble

Billion Marsh

Biology at War: A Plague in the Wind

Biology at War: The Mystery of Yellow Rain

Bird Brain, The Mystery of Bird Navigation

Bitter Cold

Black Holes of Gravity

Black Man - White Science

Black Schizophrenia

Blink: A Horizon Guide to the Senses

Blueprints in the Bloodstream

Body Clock: What makes us tick?

Bones of Contention

Boys on Bubbles / Problems and Puzzles

Brain Poison

Brave New Babies?


Breaking in Children

Breath of Life

Bridges, When It Comes to the Crunch

Britain's Next Air Disaster? Drones

As drones become more prominent features of life, questions are asked as to whether they will be a potential risk to other flying aircraft. After the Gatwick Airport incident in December 2018, work is being done to test the impact of a drone strike, as well as understand the possible threats of terrorists using drones, as well as technology being put in place to prevent disasters from occurring.

British Science - On the Wrong Track?

Broken Images

Bronze Age Blast-Off

Bruno Bettelheim, 1: The Man Who Cared for Children

Bruno Bettelheim, 2: A Sense of Surviving

Butterflies or Barley?

Bye Bye, Planet Pluto

Discussion around the status of Pluto lead to an agreements and disagreements from different quarters about the definition and characteristics of a planet. Looking back at the history of astronomers and astrologers, and the discovery timeline of the planets and minor-planets, along with the Kuiper Belt discoveries is leading to a revision of the solar system and how objects are classified.

California Dreaming

Camelford, A Bitter Aftertaste

Can AIDS Be Stopped?


Cancer at Bay

Cancer, The Pattern in the Genes

Cancer, The Smoker's Gamble


Cannabis: Miracle Medicine or Dangerous Drug?

Cannabis: The Evil Weed?

Can Venice Survive?

Can We Make a Star on Earth?

Careering into Science

Careering On

Carrot or Stick: A Horizon Guide to Raising Kids

Carry On Smoking

Cash from Trash

Cashing in on Paradise

Cashing in on the Ocean

Cat Watch 2014: The New Horizon Experiment: A Cat's Eye View

Cat Watch 2014: The New Horizon Experiment: Cat Talk

Cat Watch 2014: The New Horizon Experiment: The Lion in Your Lap


Certain of Uncertainty / State of Nature

Chance and Decay / Meteorite Mystery

Cheating Time

Child for a Lifetime

Children Without Words

Chimps Are People Too

Chimps on Death Row

Chimp Talk

China's Child

Chris Packham: 7.7 Billion People and Counting

Clean Eating: The Dirty Truth

Cleared for Take Off

Climate Change: A Horizon Guide

Clive Sinclair, The Anatomy of an Inventor

Cloning the First Human

Close Encounters

Reports of alien encounters and abductions have pervaded for decades, with a range of people making a broad number of claims. The focus are supposed sightings and meetings with the "greys", an alien lifeform believes to be around three feet tall, with a grey complexion and black eyes. Focus surrounds author Budd Hopkins whose popular book Missing Time documented apparent encounters by people who sought out his help.

Cold Fusion: Too Close to the Sun

Colonising Cyberspace

Colourful Notions

Comet of the Century: A Horizon Special

Comfort on Ageing

Coming in from the Cold

Complete Obsession: Body Dysmorphia

Computer Revolution


Conjoined Twins

Conquest of the Parasites

Constant Craving: The Science of Addiction

Contented Cows and Other Animals

Coronavirus Special - Part 1

Coronavirus Special - Part 2

Coronavirus Special - What We Know Now

Dr Chris Van Tulleken, Dr Xand Van Tulleken and Dr Guddi Singh look at the latest developments with regards to COVID-19 and tackle the concerns. The team reveal the effect it has had on genetics and medicine research, as well as modelling the pandemic which has lead to a way out of the situation. They also discuss how work done now and lessons learned will help with the next pandemic.

Cosmic Dawn: The Real Moment of Creation

Although the Big Bang is considered the moment of creation of the universe, however for the first one hundred million years of its life, it was dark and empty. The real moment of the birth of everything was actually the Cosmic Dawn, which the birth of the first stars which provided light in the universe. Astronomers are trying to find out more about the Cosmic Dawn with tools which allow them to explore the very first stars.

Could Fish Make My Child Smart?

Crab Nebula

Cracks in the Crust


In over one hundred years since the first car crash, many lessons have been learned as to what causes them, why they are sometimes fatal, and how to prevent them. The process however has had to contend with opposition from the driving industry, with safety not significantly improving until the 1960s when crash investigators became a part of police departments, and politicians took notice of the skyrocketing death figures.

Crater of Death

Sixty-five million years ago, a significant proportion of life on Earth was wiped out when an asteroid or comet hit the planet, including ending the reign of the dinosaurs in what is known as the Cretaceous-Tertiary extinction event. The hunt for the remnants of the crater lead scientists to Chicxulub on the coast of Mexico, where they have begun piecing together the events of history.

Crime Lab

Crown of Thorns

Curing Alzheimer's

Cyber Attack: The Day the NHS Stopped

Dancing in the Dark: The End of Physics?

Dante Goes to Hell

Darkness Visible

Darwin's Bulldog

Darwin's Dream

Darwin, The Legacy

Dawn of the Clone Age

Dawn of the Driverless Car

Dawn of the Solar Age

Deaf Whale, Dead Whale

Death by Design

Death of a Star

Death of the Dinosaurs

Death of the Iceman

Death of the Working Classes

Death Wish, The Untold Story


Decoding Danebury

Deepwater Disaster - The Untold Story

In 2010, the BP Deepwater Horizon explosion resulted in the release of a huge amount of oil and gas into the Gulf of Mexico before the well could be capped - eighty-seven days later. With the deaths of eleven people, analysis began to look at the disaster including the failure of the blowout preventer and the race to find a fix to the problem, as scientists begin to count the environmental cost of the damage.

Defeating Cancer

Defeating the Hackers

Defeating the Superbugs

Derek Tastes of Earwax

Designer Wines

Destination Mars

Destination Mars / Editors in Conference

Diagnosis on Demand? The Computer Will See You Now

Diamond Labs

Did Cooking Make Us Human?

Did Darwin Get It Wrong?

Diet: A Horizon Guide

Diet for a Lifetime

Digging Up the Future

Dinosaurs in Your Garden

Dinosaurs: The Hunt for Life

Dippy and the Whale

Dirty Bomb


Divers Do It Deeper

Do Cows Make You Mad?

Doctor's Dilemma

Doctors to Be

Doctors to Be, 1: Trial by Interview

Doctors to Be, 2: The Knowledge

Doctors to Be, 3: Welcome to the Real World

Dodging Doomsday

Does the MMR Jab Cause Autism?

Do I Drink Too Much?

Don't Cackle, Lay Eggs

Don't Get Sick in America

Don't Grow Old

Do We Really Need the Railways?

Do You Dig National Parks?

Do You Know What Time It Is?

Do You Remember the Memory Man?

Do You See What I See

Do You Sincerely Want a Long Life?

Dragnet for Diabetes

Drifting of the Continents

Dr. Joseph Needham / Mariner 4

Dr Miller and the Islanders

Dr. Money and the Boy with No Penis

Dr Priestley and the Breath of Life

Due to Lack of Interest Tomorrow Has Been Cancelled


Dynamo, The Life of Michael Faraday

Earthquakes, The City That Waits to Die

Earthquake Storms

After the Turkish city of Izmit was hit by an earthquake in 1999, scientists have identified a new phenomenon - Earthquake Storms. A warning had been made in 1998 that a disaster was expected in the region, though the forecast had been ignored leading to the deaths of thousands. Further, expectations are that Istanbul may be at risk due to the impact of the earthquake in nearby Izmit.

Easter Island, The Secrets

Easter Island, The Story

East of Bombay

Eat, Fast and Live Longer

Ebola: The Search for a Cure

E-Cigarettes: Miracle or Menace?

Ecstasy and Agony

Einstein, Fame

Einstein's Equation of Life and Death

Einstein's Unfinished Symphony

Einstein, The Miracle Year

Electric Heart

Elements of Risk

Elephants or Ivory

Emerging Viruses

Encounter with Jupiter

Pioneer was the first spacecraft to return pictures and data from the largest planet in the solar system, with both Voyager missions following in the 1980's. These missions enhanced the knowledge known about the Giant Red Spot as well as the rest of the atmosphere, possibilities of life being found on the planet, its magnetic field and faint ring, and the formation and features of the moons Callisto, Europa, Io, and Ganymede.

Encounter with Neptune

Voyager 2 made it all the way out to Neptune in 1989 and immediately began imaging the planet and its moon Triton to learn more about them. Upon arriving and studying Neptune, scientists discovered that it is a strange planet with more activity than expected, including high-speed winds in the Great Dark Spot, three faint rings around the planet, and other small moons found in orbit.

Energy from Outer Space



Everest: Doctors in the Death Zone Part 1

Everest: Doctors in the Death Zone Part 2


Experiments in War

Explosions in the Mind

Extinct: A Horizon Guide to Dinosaurs

Extreme Dinosaurs

Fall-Out from Chernobyl

Farewell Fantastic Venus!

Earth's close twin Venus has been the subject of much exploration, though it is a planet fraught with exploratory difficulty. The Russians in particular sent a number of probes to the planet, and landed on the surface, though these had to contend with the enormous pressures and heat. The Americans also got involved with NASA's launch of Magellan in 1989 which orbited the planet for analysis, and discovered a strange surface.

Fast Life in the Food Chain


Fat Cats, Thin Mice

Fat Files Special Edition Part 1: Born to Be Fat

Fat Files Special Edition Part 2: Fixing Fat

Fat Files Special Edition Part 3: Living on Air

Father of the Man

Feast to Save the Planet

Fermat's Last Theorem

Feynman, The Pleasure of Finding Things Out

Finding a Voice


First Britons

First Olympian

Fit to Live

Fix Me

Flight 587

Flight 587 was an Airbus A300 leaving John F. Kennedy Airport, New York to Las Américas International Airport, Santo Domingo, just two months after the 9/11 terrorist attacks. The plane crashed less than two minutes after take-off in the suburban neighbourhood of Belle Harbor and immediately, the conclusion was that the cause had to be terrorism though the NTSB investigation soon revealed the true cause.

Foetal Attraction

Food for Thought

Food Irradiation: Would You Buy It?

Forbidden Events / I am a Madman

For Love or Money

For the Safety of Mankind

Four Fast Legs and a Nose

Fracking: The New Energy Rush

Freak Wave

With one ship a week sinking, some have been known to mysteriously sink without a distress call being issued, and experts have put the situation down to "rogue waves". With even the largest and best maintained ships being affected, the case of the MS München and its sinking in 1978 left evidence behind that the powerful forces of water exist and can appear out of nowhere.

From Earth to Miranda

From Field to Factory

From Here to Infinity

From Peenemunde to the Moon

Fuel for the Future / Collector's Piece

Fusion, The Energy Promise

Gaze in Wonder

Genes in Action / Scientists and War


Genes R Us

Genetic Roulette

Genie, Secret of the Wild Child

Genius of the Jet

Gentlemen, Lift Your Skirts

Gerald Edelman, The Man Who Made Up His Mind

Geronimo's Children

Ghost of the Amoco Cadiz

Ghosts in the Dinosaur Graveyard

Gilding the Lily

Global Dimming

Scientific studies are suggesting that we have underestimated the speed of climate change, with the effect of global dimming. In the immediate aftermath of 9/11, scientists discovered the possibility that water vapour trails left behind by now grounded aircraft have a large impact on the climate. As air pollution is reduced through technology, this could mean a big increase in the rate of climate change previously unaccounted for.

Global Village

Global Weirding

The weather appears to be becoming more extreme all over the planet which has lead to some scientists coming up with the term 'Global Weirding'. Starting with the increasing power of hurricanes in the Atlantic, as well as a devastating drought and dust storms in west Texas, the changes will also affect Britain as longer, drier spells are predicted alongside significant flooding due to increasing rainfall.

God on the Brain

Goodbye Cassini: Hello Saturn

Goodbye Gutenberg

Great Ormond Street

Guess What's Coming to Dinner

Hair Care Secrets

Half Hearted About Semi-Skimmed

Half-Way to 1984

Halley's Comet: The Apparition

Hand Me My Sword, Humphrey

Happy Catastrophe

Hard Rock

Heads I Win, Tails You Lose

Hearing Voices

Helike, The Real Atlantis

The search for the lost Greek city of Helike has been likened to a real Atlantis. Supposed to have existed over two thousand years in the past, Helike was a large city which was apparently disappeared over the night, with theories positing that an Earthquake destroyed the city. However, what caused the city to vanish is up for debate as some believed it was swept into the sea, while others suggest liquefaction caused it to be buried under a lagoon.

Hello Universe!

Henry Royce, Mechanic

Here Be Monsters

With the launch of the Hubble Space Telescope in 1990, and other instrumentation, science is beginning to prove theories about the start of the universe, and how galaxies and stars are formed. Starting with Edwin Hubble's work, the continuing scientific study discusses the merging of galaxies and the formations of black holes, and looks at what we know and don't know about the hidden centres of them.

Hidden World

Hide and Seek in Iraq

Hills of Promise

Hi-Tech a la Française

Hitler's Bomb

Homeopathy, The Test

Hopeful Monsters

Horizon 2002

Horizon Revisited, A Tale of Two Feathers

Horizon Revisited, Back to the Dark Ages

Horizon Revisited, Dawn of the Dinosaurs

Horizon Revisited, Mega Tsunami: Coming to a Beach near You

Horizon Revisited, Michael Adler on AIDS

Horizon Revisited, The Human Genome Project

Horizon Revisited, You Do as You Are Told: Jonathan Miller and the Milgram Experiment

Horizon Special: The Vaccine

Hospital, Episode 1922

Hot Jam in the Doughnut

How Best to Make a Man, How Best to Make a Scientist

How Big Is the Universe?

This episode was proceeded by How Small Is the Universe?

How Does It Hurt?

How Does Your Memory Work?

How Do You Read?

How Long Is a Piece of String?

How Mad Are You? Part 1

How Mad Are You? Part 2

How Many People Can Live on Planet Earth?

How Much Can You Drink?

How Much Do You Drink?

How Much Do You Smell?

How Much Is Your Dead Body Worth?

How on Earth Did They Do That?

How Safe Is Surgery?

How Small Is the Universe?

This episode was preceded by How Big Is the Universe?

How They Sold Doomsday

How to Avoid Mistakes in Surgery

How to Build a Time Machine

How to Commit the Perfect Murder

How to Film the Impossible

How to Find Love Online

How to Kill a Human Being

How to Live to Be 101

How to Make Better Decisions

How to Mend a Broken Heart

How to Survive a Disaster

How Violent Are You?

How You Really Make Decisions

Hubble: The Wonders of Space Revealed

Hubble Vision

The Hubble space telescope was launched with a flaw in the size of the optical mirror, which resulted in only blurry images being returned. It was down to the crew of the Endeavour space shuttle to perform a service mission to implement a fix, as well as resolve other issues which had appeared since the launch. The mission, which was subject to immense political pressure, was needed to succeed with failure being a potential death knell for NASA.

Human Version 2.0

Hunters of the Seal

Hunt for the Doomsday Asteroid



Icarus' Children


While climbing in the Ötztal Alps in September 1991, a body was discovered in a glacier. It was named Ötzi, aged to around forty-five and significantly different from other bodies. Investigations determined that Ötzi lived during the Copper Age between 3400BC and 3100BC and the body is thought to be Europe's oldest natural mummy leading to speculation about who he was and how he died.

Ice Mummies 1: The Ice Maiden

Ice Mummies 2: A Life in Ice

Ice Mummies 3: Frozen in Heaven

Ice Station Antarctica

Icon Earth

I Don't Want to Be a Burden

If at First You Don't Succeed... You Don't Succeed

If Only They Could Speak

I'm Dependent, You're Addicted

Immortal? A Horizon Guide to Ageing

Impact! A Horizon Guide to Car Crashes

Impact! A Horizon Guide to Plane Crashes

In My Lifetime?

Innocent Slaughter?

In Search of Konrad Lorenz

In Search of Pegasus

In Search of the Noble Savage

Inside CERN

Inside Chernobyl Sarcophagus

A recording take by two scientists from the Kurchatov Institute in 1989 who conducted an expedition into the Chernoyl nuclear reactor sarcophagus after its explosion. The video shows the men in various rooms of the severely damaged power plant, though the footage in certain areas is badly impacted by the amount of radiation being given off from the reactor and its effect on the electronics.

Inside Every Fat Man...

Inside the Dark Web

Inside the Shark

Inside the Social Network: Facebook's Difficult Year

In the Beginning Was the Word

In the Last Resort

In the Light of New Information

In the Matter of Dr Alfred Nobel

In the Wake of HMS Sheffield

Intimate Relations

Intimate Strangers

Invasion of the Virions

Investigating Murder

Iras, The Supercooled Eye

Is Alcohol Worse than Ecstasy?

With more drugs, both legal and illegal, being easier to obtain than ever before, there are questions about which are the most society-impacting substances. Taking three criteria for drugs by looking at the impact on the user, the addictiveness of it, and the consequences to society from its use, a scientifically-backed list of the twenty worst drugs has been produced and explained, with some possibly surprising selections.

Is Binge Drinking Really That Bad?

Is Everything We Know About the Universe Wrong?

Is GM Safe?

Is Nuclear Power Safe?

Is Seeing Believing?

Is Your Brain Male or Female?


Janice's Choice

Japan Earthquake: A Horizon Special with Iain Stewart

Jimmy Carr and the Science of Laughter

Jimmy's GM Food Fight


Journey Through the Human Body


Jupiter Revealed

The Juno spacecraft mission will allow scientists the opportunity to explore the inside of Jupiter for the first time, in an effort to answer questions which had been awaiting answers for years. The hope is to find out what makes up the interior of Jupiter beneath its dense atmosphere, which being able to survive the dangers of the planet with its strong radiation and large magnetic field.

Just Another World

Keen as Mustard

Killer Algae

A small plant discovery in California lead to concerns of biologists, which has been termed 'Killer Algae'. The highly invasive water plant was found in a lagoon, with fears that it could spread to the Pacific Ocean, and on to devestate the oceans eco-systems. Named Caulerpa taxifolia, it is a tropical plant which was first found in the Mediterranean Sea in 1984, and has since been discovered in other odd locations.

Killer in the Village

Killer Lakes

At Lake Kivu in Rwanda, West Africa, there is a significant danger to the people living nearby which has killed previously. With the mysterious death of thirty-seven people at Lake Monoun in Cameroon and a much larger incident involving people and animals at Lake Nyos, scientists begin to investigate what could have caused deaths which looked very much like asphyxiation, and how they can be prevented from happening again.

King Coal Revived

King Solomon's Garden

King Solomon's Tablet of Stone

Koestler on Creativity

Kula, A Reason for Giving

Kuru, To Tremble with Fear

Last Flight of the Columbia

Returning from a successful mission in February 2003, the Columbia space shuttle began its re-entry into Earth's atmosphere where it disintegrated resulting in the death of the seven astronauts aboard. The resulting investigation questioned what happened to cause the disaster, whether the astronauts deaths could have been prevented, how future problems of a similar type can be avoided.

Learning from Machines

Legacy of a Volcano

Let Newton Be

Let the Therapy Fit the Crime


Life and Death in the 21st Century Special Edition Part 1: Living Forever

Life and Death in the 21st Century Special Edition Part 2: Future Plagues

Life and Death in the 21st Century Special Edition Part 3: Designer Babies

Life Blood

Life Is Impossible

Life on Mars

Life Story

Light of the 21st Century

Lindemann Enigma

Listen and Be Loyal

Little Boxes

Little Cat Diaries

Living Death

Living Machines

Living Nightmare

Living with ADHD

Living with Autism

Living with Dying


The invention of longitude as a way of identifying the location of a ship on the seas revolutionised the way navigation was conducted. After previously only being able to use the crude method of the speed of the ship in knots and determine position from latitude measurements of the sun's angle to the horizon, the implementation of a way to measure longitude promised the prize of a sum of money to the creator.

Looking for a Happy Landing

Lords of the Sea

Lost City of Nazca

In the desert of Peru, ancient geoglyphs are being investigated with an archaeological dig on the site of what was a large city - Nazca - between 500BC and 500AD. A large number of historical finds have been found and have allowed historians to build up a past of the at times, strange customs of the Nazca people, though their work is disturbed by tomb robbers who are damaging the site.

Lost Waters of the Nile

Lumbered... With Back-Ache!

Machines and People

Madagascar, A Treetop Odyssey

New technology is allowing scientists to reach the canopy of previously untouched rainforest in Madagascar, in a bid to study it and ensure its survival. With the island being cut off from Africa for more than eighty million years, its long isolation had allowed it to develop an array of unique plants and animals. However, these have become under threat by deforestation of their habitat.

Mad but Glad

Madness on Trial

Magic Bullet

Magnet Earth

Making an Honest Fiver

Making Millions the Easy Way

Making of an English Landscape

Making Sex Pay

Malaria, Battle of the Merozoites

Malaria, Defeating the Curse

Man in Search of Himself

Man in Space

Man Made Lakes of Africa

Man meets Duck / The Picture Machines

Man of Science / 'Nature' Tomorrow

Man on Mars: Mission to the Red Planet

Man's Best Friend

Mars: A Horizon Guide

With the possibility of life on Mars, the planet has long captured the imagination. The first pictures pondered canals, forests, and water on the body while science fiction and popular culture suggested strange and exotic lifeforms, though science has since modified expectations with the launch of probes to the surface to perform analysis. However, further plans are in motion to land a human on the planet.

Mars Alive

Mars: A Traveller's Guide

With talk of sending travellers to Mars becoming closer to being reality, scientists discuss what will be needed to achieve a successful mission. With the belief that the first person to set foot on Mars already being alive, questions such as where they should go and what resources will be needed to survive are tackled. This episode also showcases landmarks such as volcanoes, vast plains, and underground caverns.

Mars, Death or Glory?

Mars Special Episode Part 1: Life on Mars

Mars Special Episode Part 2: Destination Mars

Master of the Microscope

Masters of the Desert

Masters of the Ionosphere

Measuring the Roof of the World

Medicine 2000

Meditation and the Mind

Mega-Tsunami, Wave of Destruction


Men and Sharks / Sir Henry Dale, OM, FRS

Mend Me: A Horizon Guide to Transplants



Million Ton Tanker

Mind over Body

Mind the Machine

Mines Minerals and Men

Miracle Cure? A Decade of the Human Genome

Miracle in Orbit

Mir Mortals

A look at the three men aboard Mir on the ill-fated space station, which included an American astronaut. Declared unsafe by NASA in 1991, the Americans attempted to bolster relations with Russia and agreed to pay for astronauts to travel to the station as part of preparations for the forthcoming International Space Station. However, various problems on the ageing station culminated in a fire which threatened the lives of those on board.

Mission to Mars

Mistaken Identity

M.I.T.'s ABC / The Disturbed Child

Molecules with Sunglasses

Monitor Me

Moon Children

Moon for Sale

As humans prepare to return to the Moon for the first time since 1972. NASA plans to prepare for colonisation with the missions, with the aim to build a lunar base using a host of new and existing technologies. Other countries, such as China, Russia, and India who also have their own plans, which could lead to fundamental changes in the world in land ownership on the lunar surface, power generation, and mining, as countries plan resource extraction and exploitation of the satellite.


Most of Our Universe Is Missing

Moving Still

Mr Ludwig's Tropical Dreamland

Muck Today - Poison Tomorrow

Music and the Mind

My Amazing Brain: Richard's War

My Amazing Twin

My Pet Dinosaur

Mystery of the Left Hand


Nature's Numbers

Navajo, The Last Red Indians

Navigating Europe


Never Too Late to Learn

New Asteroid Danger

Newpin, A Lifeline

New Star in Orbit

Beginning the construction of the International Space Station in 1998, the NASA story to reach this point is that of a changing goal, going vastly over-budget, and delays of many years. Beginning with a mission initiated by president Ronald Reagan in 1984, the purpose was to provide a place to explore space from a permanently manned habitat, though the idea also has its detractors who question the value of the project.

Nice Guys Finish First

Noah's Ark in Kensington

Noah's Flood

No One Will Take Me Seriously

No Ordinary Genius, Episode 1

No Ordinary Genius, Episode 2

Notes of a Biology Watcher

Not the Cheapest but the Best

Now the Chips are Down

An examination of the invention that is the microprocessor and the development process which built up around Silicon Valley. Taking a look at what it will enable, the show looks at its use in medicine and computer gaming, as well as asking about the effect of automation and what problems it presents to future industry with examples of the introduction of word processors to the office and storage control in warehouses.

Nuclear Nightmares

OCD: A Monster in My Mind

Oceans of the Solar System

Analysis of the bodies in the solar system continues with the search for water. Looking at oceans both past and present, the relationship with the potential for life to have developed is looked at, as well as how that life could possibly still exist on a planet like Mars where there are extremely harsh conditions. Missions to the moons of the solar system have also found water vapour emitted from Enceladus, a potentially deep ocean under thick ice on Ganymede, and oceans of liquid methane on Titan.

Of Big Bangs, Stick Men and Galactic Holes

Oil Spill

On a Different Track

Once a Junkie

Once in a Million Years

One Liverpool or Two?

One Man's Meat

One of Nature's Hotels

One Small Step

Only Skin Deep

Orange Sherbert Kisses

Other Side of the Pill / Search for the Original Mind

Outbreak, The Microbe Masters the Mould

Out of Asia

Out of Control?

Out of Volcanoes


Painting by Numbers


Pandemic: A Horizon Guide

Parallel Universes

Parasite of Paradise

Patently Absurd

Patients on Trial

Pedal Power

Percy Pilcher's Flying Machine

Perils of the Deep

Pesticides and Posterity

Pest Wars

Phantasmagoria, The Magic Lantern

Picking Winners

Pill Poppers

Planet Hunters

Playing at Noah

Playing God

Playing with Madness

Pluto: Back From the Dead

With the New Horizons mission arriving at Pluto, the spacecraft has returned new close-up images and scientific discoveries about the distant planet, and in effect, bringing it back from the dead by reinvigorating interest in the distant world. In the days before its arrival, the mission control team had to contend with a communication malfunction which put the entire mission at risk.

Police Stress, John Wayne Syndrome

Portrait of a Poison

Powers of Persuasion

Predators in Your Backyard

Premature Babies, The Limits to Birth

Prisoner or Patient?

Prisoners of Hope

Prisoners of Incest

Professor Bonner and the Slime Moulds

Professor Hawking's Universe

Professor in Toyland

Professor J.B.S. Haldane, Obituary

Professor Regan's Supermarket Secrets

Prof Regan's Beauty Parlour

Project Fido

Project Greenglow: The Quest for Gravity Control

Project Poltergeist

Psychedelic Science

Purple Warrior, Limited War

Purple Warrior, Rules of Engagement

Rail Crash

High speed rail travel is one of the statistically safest way of travelling in the United Kingdom, and with the aid of technology, will continue to improve. Looking at inquiries after previous crashes, and the safeguards introduced as an outcome, a number of crashes and the subsequent investigations are looked at to analyse how safety on the railways has been improved since its early days of rudimentary management.

Red Sea Coral and the Crown of Thorns

Red Star in Orbit, 1: The Invisible Spaceman

From Baikonur Cosmodrome in Kazakhstan, the Soviet space programme continues to make achievements such as logging more than seven thousand manned hours in space, after a large number of firsts. One of the key architects of the early rockets to get the Soviet Union into space was Sergey Pavlovich Korolev whose identity was kept a secret by political leaders, and only referred to by his title until after his death.

Red Star in Orbit, 2: The Dark Side of the Moon

Red Star in Orbit, 3: The Mission

Reflections on a River

Report on V.D.

Resolution on Saturn, 1: The Rings

Resolution on Saturn, 2: The Moons

Restless Genius / Faster, Farther, Higher

Resurrecting the Dead Sea Scrolls


Riddle of the Joints

Riding the Stack

Route 128 / A Theory of The Earth

Rumours of Wars

Russia's Deep Secrets

Rutherford, The Cavendish Today

Saddam's Secrets

SARS, The True Story

Saturn, Lord of the Rings

The Cassini-Huygens mission started in the early 1990s with a collaboration between NASA and the ESA which will venture to Saturn and its moon Titan. The hopes are that it will improve our understanding of both bodies and continue where the Voyager missions previously left off. However, problems with the mission had to be overcome when a mistake in the design of the radio communication between the two craft was discovered.

Science and Art

Science and the Supernatural

Science... Fiction?

Science Fiction, Science Fact - Alone and Unarmed

Science Fiction, Science Fact - The Dolphins that Joined The Navy

Science for the People

Science Is Dead, Long Live Science

Science on Safari

Science, Toys and Magic

Science Under Attack

Search for Life

Secrets of a Coral Island

Secrets of the Solar System

Secrets of the Star Disc

Seeing Stars

Sex: A Horizon Guide

Sex and Sexuality

Sex Can Be a Problem


Sexual Chemistry

Shadows of Bliss


Shots in the Dark

Should I Eat Meat? How to Feed the Planet

Should I Eat Meat? The Big Health Dilemma

Should We Close Our Zoos?

Siamese Twins

Signs of Life

Signs of the Apes, Songs of the Whales

Silent Children, New Language

Silent Speech

Sir Walter's Journey, A Genetic Map of Britain

Sixty Minutes to Meltdown

Sizewell Under Pressure

Skeleton Key

Skyscraper Fire Fighters

Small Arms, Soft Targets

Smallpox on Death Row

Small Problem with the Mirror

Smart Weapons

Smokers Can Harm Your Health

Smokers' Luck

Snowball Earth

Solar Storms: The Threat to Planet Earth

With the Sun becoming more active, and that increases the risk of solar storms hitting the Earth with the effect of bringing modern life to a standstill. In 1989, Quebec was hit by a solar storm and suffered a major power failure providing a hint of the potential problems - the most vulnerable of which are satellites and electrical systems - leading scientists to study how they can predict the next one.

Some Liked It Hot

Something for Our Children

Sons of Cain

Sorry I Opened My Mouth

So you want to be an Inventor? / The Severed Hand

Space Tourists

Space Volcanoes

Special Senses

Spend and Prosper

Spies in the Wires

Spina Bifida & Me

Sports Doping: Winning at Any Cost?

Square Pegs

Star Gazers

Stone Age Columbus

Stopping Male Suicide

Strangeness Minus Three

Strange Signals from Outer Space!

The chances of an advanced civilisation being discovered in space is considered to be large due to the vast size of the universe, however the lack of communication provides support currently for the opposite. The discovery of a massively powerful signal leads to questions as to whether we are about to find that civilisation, though the science has problems with the strength of the signal indicating a super-advanced society.

Strange Sleep

Stretch Up Tall

Struggling for Control

Stuff: A Horizon Guide to Materials

Sudden Death

Sugar v Fat

Suggers, Fruggers and Data-Muggers

Supercharged, The Grand Prix Car (1924-1939)

Superconductor, The Race for the Prize

Supermassive Black Holes


Supervolcanoes have erupted in the past, and a discovery of dead animal fossils in Nebraska lead to the conclusion that they were killed in an eruption event which was determined to be a supervolcano located in Idaho which covered North America in ash. With a supervolcano discovered in Yellowstone National Park, scientists question how an eruption will come about and what it would mean for life on the Earth.

Survival in the Sahara

Survival of the Fastest

Survival of the Weakest

Surviving a Car Crash

Survivors Guide to Plane Crashes

Taking a look at aircraft crashes and the chance of survival, the aviation safety industry is looked at to find out the best scenarios for surviving. A number of previous accidents are analysed to find out how passengers can reduce injuries during a high-speed impact, survive after ditching into water, where the safest seat on a plane is, how to evacuate safely and what to do in smoke-filled conditions.

Swallowed by a Black Hole

Swallowed by a Sink Hole

In Florida, a 2013 sinkhole claimed the life of Jeff Bush in his own home as his bedroom floor collapsed into a forming chasm. Geologists are investigating the phenomenon which can cause quick-forming holes in the soft limestone rock, which is prone to dissolving when it meets with water. Also occurring in a number of places around the world, the number of sinkholes in Florida has made it almost impossible to count them.

Sweet Solutions

Taking the Credit

Talking Turtle

Taming the Problem Child


Taste of Foods to Come

TB, The Forgotten Plague

Technology and Self Determination

Teenagers vs Cancer: A User's Guide

Ten Years in the Antarctic

Thalidomide, A Necessary Evil

Thalidomide, a Second Chance?

The £10 Million Challenge

The 10,000 Year Test

The 250 Million Pound Cancer Cure

The 7/7 Bombers, A Psychological Investigation

The A6 Murder

In 1962, James Hanratty, also known as the A6 Murderer, was hanged after being convicted of the murder of scientist Michael Gregsten who was shot dead on the road the previous year alongside his lover Valerie Storie who survived the incident with paralysis. He died protesting the verdict believing that the crime had been pinned on him by the police despite being identified by Storie as the murderer.

The Academy

The Age of Big Data

The Air of Science

The Amateur Scientist

The Amazing Doctor Newton

The Anthropic Principle

The Ape That Stood Up

The Ape That Took Over the World

The Artificial Heart

The Athlete

The Atkins Diet

The Beginning of Life / Science Friction

The Betrayers

The Bible Code

The Big Chill

Climate Change models have predicted that Britain's weather may become more Meditteranean, though suggestions also indicate this to be wildly wrong, and it may have more similarities with Alaska. Scientific studies are looking at how quickly climate jolts can occur with evidence pointing to changes in the Gulf Stream. This is reckoned alongside the impacts of the average temperature on Earth rising over the next century.

The Big Dishes / The Living Stream

The Big If

The Big Sleep

The Big Smoke / The Model Makers

The Black Sun

The Blind Watchmaker

The Book of Man

The Boy Who Was Turned into a Girl

The Brain Gain / The Sudden Night / Learning to Speak

The Brain Puzzle

The Britannic Greenhouse

The Broken Bridge

The Bulldog's Last Bark?

The Bull's-Eye War

The Butchers of Boxgrove

The Canal in the Jungle

The French attempted to construct the Panama Canal in the late 1800's, in an effort which failed due to death of thousands of workers and difficult conditions. When the American's began construction again in 1904, their attempt started with a disastrous first year, but increased organisation soon had the effort in motion.

The Cancer Detectives of Lin Xian

The Careful Predator

The Case of E.S.P.

The Case of the Ancient Astronauts

Some people posit whether the Earth has already been visited by aliens, whose folklore has made up portions of religion and history. Erich von Däniken's 1968 book Chariots of the Gods? makes a number of claims which proved popular at the time with the public, but fell short scientifically with far more rational explanations on offer.

The Case of the Bermuda Triangle

The Case of the Frozen Addict

The Case of the UFOs

During an aircraft training session, a pilot spotted and recorded a high-flying object which appeared to be similar to a jet. The sighting was added to Project Blue Book, a record and systematic study of unidentified flying object sightings. When the U.S. Air Force concluded that UFOs didn't exist and shut down the project, sightings were still reported and hoaxes continued to be logged.

The Change of Life

The Chemical Dream

The Child Mothers

The Children of Eve

The Children of Peru

The Chopper

The Cleanest Place in the World

The Cline Affair

The Company of Ants and Bees

The Computer That Ate Hollywood

The Contraceptive Pill: How Safe Is It?

The Core

After two new instruments were installed on Hubble, they began to malfunction during operation. The situation lead scientists to discover the South Atlantic Anomaly - an area where the inner Van Allen radiation belt comes closest to Earth's surface, leading to further investigations of the core such as what it is made of and how its operation generates the magnetic field.

The Cornucopia

The Creative Brain - How Insight Works

The Cruel Choice

The Cry for Help

The Curse of Karash

The Curse of Vesuvius

The Curtain of Silence

The Dark Secret of Hendrik Schön

The Day It Rained Periwinkles

The Day the Earth Melted

The Day The Earth Nearly Died

The Day We Learned to Think

The Dead Sea Lives

The Death of the Oceans?

Scientists are investigating how long the oceans can continue to cope with the pressures of commercial fishing and ocean acidification, as life in the ocean continues to dwindle. Due to the influx of new technologies to catch fish such as sonar and factory ships, studies are predicting that fish stocks of the oceans will collapse by 2050, though there have been some improvements in places were measures have been taken.

The Death Star

Until recently, humans were unable to observe as far back as the beginning of the universe. However, belief that the Soviets were testing nuclear weapons on the far side of the moon during the cold war cold war lead to the discovery of gamma-ray bursts believed to be eminating from the edge of the universe. However, the hypothesis proved tricky to accept with the threat of Einstein's Mass-energy equivalence being proved wrong.

The Demonic Ape

The Diamond Makers

The Diary of Discovery

The Dinosaur Hunters

The Dinosaur That Fooled the World

The Doctor Who Makes People Walk Again?

The Dolphins that Joined The Navy / A Theory of The Earth

The Drift from Science

The Earthquake Connection

The Eddystone Lights

The Edelin Affair

The Electronic Frontier

The Elephant's Guide to Sex

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

The End of the Solar System

The End of the World? A Horizon Guide to Armageddon

The England Patient

The Equation of Murder

The Expert Witness

The Fall of the World Trade Center

Six months after the attacks on the World Trade Center which resulted in the collapse of both towers, questions are being asked about the construction of the towers. Their design is called into question, and the causes of the failure brings about whether an alternative could have prevented a collapse and if fewer people would have died if changes were made to fire-proofing and floor-truss design.

The Fatal Bargain

The Fat in the Fire

The Fierce People

The Fight to Be Male

The Final Frontier? A Horizon Guide to the Universe

The First 14 Days

The First Americans

The First Signs of Washoe

The First Ten Years

The Food Allergy War

The Forever Fuel

The Fretful Elements

The Future Goes Boom

The Future-Made in Japan?

The Gargantuan Triumph of Science

The Gene Race

The Geneva Event

In October 1982, a scientific experiment took place at CERN to look for sub-atomic particles which had been predicted for the past twenty years. Using an underground particle accelerator, the scientists are looking for the W and Z bosons by way of complex detectors and a precisely constructed experiment which would hopefully reveal the presence of the particles when beams of protons and anti-protons were collided.

The Genius Sperm Bank

The Ghost in Your Genes

The Gifted Child

The Glazed Outlook

The Goddess of the Earth

The Great Balloon Race

The Great British Drought

The Great British Intelligence Test

The Great Computer Scandal / H-Bomb Detectors

The Greatest Advance Since the Wheel

The Great Fish Hunt

The Great Plains Massacre

The Great Robot Race

The Great Wine Revolution

The Greenhouse Effect

The Green Machine

The Grid

The Guinea Pig and the Law

The Gulf War Jigsaw

The Hawking Paradox

The Healing Nightmare

The Heart of Another

The Honest Supermarket: What's Really in Our Food?

The Hope of Progress

The Horizon Guide to AI

The Hot-Blooded Dinosaurs

The Human Animal

The Human Experiment (BSE Special Episode)

The Human Laboratory

The Hunt for AI

The Hunt for the AIDS Vaccine

The Hunt for the Higgs

The Hunt for the Legion Killer

The Hunt for the Supertwister

The Hunting of the Quark

The I-Bomb

The Ice Forms (Antarctica Special Edition Part 1)

Geologists working in Antarctica are exploring the continent in the hope of discovering how it came to exist as it does today, after the break-up of supercontinent Gondwana. The scientists work has them taking rock samples to find out what it looked like in previous times and how it came to develop the large ice sheet which covers the landmass.

The Ice Lives (Antarctica Special Edition Part 2)

The United States Antarctic Programme continues the scientific exploration of the polar region, with the knowledge gained being applied to other environments such as space. Focusing on the McMurdo station, the research centres on human survival in the harsh environment by way of analysing the lives of nematodes, fish, seals, and penguins.

The Ice Melts (Antarctica Special Edition Part 3)

Detection of the human impact on the environment has reached Antarctica, where monitoring stations have measured a two degree temperature rise. As warnings mount through increasing sea levels, there are further fears to the worlds oceans as sea ice and glaciers in the polar region begin to melt at an accelerating rate.

The Immigrant Doctors

The Immortalist

The Incredible Machine

The Insect War

The Intelligence Man

The Intelligent Island

The Invisible Enemy (BSE Special episode)

Their Life in Your Hands

The Keys of Paradise

The Killer Dust

The Knowledge Explosion

The Last Mammoth

The Last of the Polymaths

The Laws of the Land

The Life and Death of the Pine Processionary

The Life and Times of El Niño

The Life and Times of Life and Time

The Life That Lives on Man

The Lonely Children

The Long Long Walkabout

The Long Road to the West

The Long Slide / Men with Gills

The Long Valley

The Lords of the Labyrinth

The Lost City of New Orleans

After Hurricane Katrina hit New Orleans in 2005, scientists started working on whether its flooded fate is a sign of things to come for coastal locations as sea levels continue to rise. Analysis questions how the levees were breached and what the state of the levees were, which had not been predicted to fail, resulting in the finding that the city had been living on borrowed time since they were built.

The Lost Civilisation of Peru

The Lost Pyramids of Caral

The Lost Tribes of Humanity

The Lost World of Lake Vostok

The Lysenko Affair

The Magma Chamber

The Making of a Natural History Film

The Malvern Link

The Manhunters

The Man Makers

The Man Who Lost His Body

The Man Who Moved the Mountains

The Man Who Talks to Frogs

The Mcmaster Experiment

The Measure of Man

The Men Who Bottled a Cow

The Men Who Painted Caves

The Message in the Rocks

The Mexican Oil Dance

The Midas Formula

The Military Necessity

The Million Murdering Death

The Mind of a Murderer, 1: The Case of the Hillside Strangler

The Mind of a Murderer, 2: The Mask of Madness

The Mind's Eye

The Miracle of Life

The Miraculous Wonder, The Human Eye

The Missing Link

Palaeontologists set about finding the missing link of to how our ancestor species left the waters of the seas and moved onto land by way of legs. Setting about finding how a fish had grown legs over four hundred million years ago, the hunt for the fossil of Ichthyostega begins. However, its discovery in Greenland resulted in more questions than answers with a continued gap in the stages of evolution.

The Mondragon Experiment

The Moscow Theatre Siege

The Mould, the Myth and the Microbe

The Mysterious Mr Tesla

The Mystery of Dark Energy

The Mystery of Easter Island

Modern science is beginning to explain the history of Rapa Nui, also known as Easter Island, which was once home to the Rapa Nui people. When it was visited by Dutch explorers, they found large stone heads which had been created which lead to questions about who the people where, how they got to the island, what the purpose of the stone heads were, and what happened to bring an end to their civilisation.

The Mystery of King Arthur and His Round Table

The Mystery of Murder: A Horizon Guide

The Mystery of the Human Hobbit

The Mystery of the Jurassic

The Mystery of the Miami Circle

Near Miami, the discovery of prehistoric life and holes in limestone on an archaelogical dig had scientists questioning what the find could be. Known as the Miami Circle, questions surrounded the age of the formation, who was behind its creation, and what possible purpose it served. Its discovery held up the construction of a residential block, leading to the sale of the land so archaelogical surveys could continue.

The Mystery of the Persian Mummy

The Neglected Harvest

The New Alchemists

The New Breadline

The New Face of Leprosy

The New Sixth Sense

The Next Megaquake

The Nine Months That Made You

The Other Kenya

The Other Way

The Overworked Miracle

The Pathway from Madness

The Periscope War

The Pill for the People

The Placebo Experiment: Can My Brain Cure My Body?

The Planet Hunters

The first announcement of a planet outside the solar system proved to be a mistake, though later revelations have brought the true scale of the universe to view. The search for planets is also intertwined with the search for life, though the location of them requires time and patience of scientists specialising in planet hunting, with some believing that finding planets which are suitable to host life may require a Jupiter-like body to be present in the same system.

The Planets

The Poison That Waits

The Power of the Placebo

The Predator

The President's Guide to Science

The Private Face of Medicine

The Problem of Pain

The Professor of Surgery

The Pyramid Builders

The Quake of 89: The Final Warning?

The Qualyub Project

The Quest for Tannu Tuva

The Race for the Double Helix

The Race to Re-Shape Cars

The Race to Ruin

The competition of the space race continued into the early 1980s with the United States fear that the Russians are ahead of them in space-military technology. The technology discussed centres around developing laser-based weapons which are capable of hitting targets on the Earth, as the episode covers the speed of innovation leading the Russians into space as well as the potential pitfalls of defense spending.

The Rainmaker

The Rat Man, Sigmund Freud

The Real Bionic Man

The Red Deer of Rhum

The Red Planet

There's a Rhino in My Sugar

The Restaurant that Burns Off Calories

The Return of the Osprey

The Rhine's Revenge

The River That Came Clean

The Robots Are Coming

The Runaway Mountain

A recent discovery has been made known as Long Runout Landslides, that allows rock to act much like a liquid, with the first recorded example being the mining town of Frank, Canada in 1903. Other examples have been identified, though geologists have at times disagreed about the ability for rock to move in such a way. Studies of Hawaii have also shown that the theory was highly likely, while the eruption of Mount St Helens confirmed the idea.

The Savage Mind

The Science of Star Trek

The Scientist and the Baby

The Sea Behind the Dunes

The Search for the Disappeared

The Secret

The Secret Life of Caves

The Secret Life of the Cat

The Secret Life of the Dog

More scientific research detailing the link between humans and dogs has recently been underway, and with it comes further understanding of their intelligence and how they came to be domesticated. Using new technology, scientists have been looking at how dogs pick up on human emotion, and in reverse, whether human owners can pick up the communications given off by dogs such as their barks and body language.

The Secret Life of Your Body Clock

The Secret of El Dorado - Discovery of Terra Preta

The Secret of the Snake

The Secrets of Sleep

The Secret Treasures of Zeugma

The Secret World of Pain

The Secret You

The Selfish Gene

The Shadow of Breast Cancer

The Shape of War to Come

The Sharpest Show of the Universe

The Shipwreck

The Sickly Sea

The Six Billion Dollar Experiment

The Slatemakers

The Space Shuttle: A Horizon Guide

As the final space shuttle flight takes place, analysis begins with a look at the history of the space shuttle from its inception to retirement. The contributions it has made to science are also discussed as well as the disasters of Challenger and Columbia that went with it, alongside the financial costs of running the space shuttles and public relations requirements to keep the shuttle viable politically.

The Spike

The State of the Planet

The Steadfast Tin Soldier

The Strange Life and Death of Dr. Turing

The Structure of Life

The Sunspot Mystery

The Surgery of Violence

The Talgai Skull

The Technique of Change

The Telly of Tomorrow

The Terracotta Time Machine

The Theatre of War

The Three Chord Trick

The Time Lords

The Total War Machine

The Transit of Venus: A Horizon Special

The Transplanted Brain

The Transplant Experience

The Trobriand Experiment

The Troubled Mind / Triple-A. S.

The Trouble with Medicine

The Trouble with Space Junk

As more spacecraft are launched and existing equipment is decommissioned, the risks posed by space junk in low-Earth orbit increases. When the International Space Station was threatened by a piece of debris which resulted in astronauts having to prepare for evacuation, questions began to be asked about what can be done to mitigate and resolve the issue.

The Truth About Exercise

The Truth About Fat

The Truth About Looking Young

The Truth About Meteors

The Chelyabinsk Meteor impact in 2013 reminded us that the Earth is as exposed as ever as it orbits the Sun, as it managed to cause damage to the city it passed over, and caused a significant number of injuries from the generated shockwave. Scientists have begun to analyse the camera footage and collected rock samples to further their understanding of the meteor and its origin.

The Truth About Personality

The Truth About Sex

The Truth about Taste

The Truth About Vitamins

The Truth of Troy

The Tsetse Trap

The Twenty-Five Hour Clock

The Unborn Patient

The Unsafe Sea

The Valley of Life or Death

The Victims

The View from Space

The Virus That Cures

The Vision of the Blind

The Vital Spark

The War of the Boffins

The Way Out

The Ways We Move

The Wildest Weather in the Universe

The Wizard Who Spat on the Floor

The Woman Who Thinks Like a Cow

The Wood

The World of Buckminster Fuller

The World of Margaret Mead

The World of Ted Serios

The World Outside

The World's First Face Transplant

The Writing on the Wall

The Wrong Stuff

The Year of the Locusts


This Yankee Dodge Beats Mesmerism Hollow

Three Score Years and Then?

Tibet, The Ice Mother

Time of Darkness

Time Stood Still / Weighty Matters

Time Trip

Tim Peake Special: How to Be an Astronaut

Titan, A Place Like Home?

Saturn's moon Titan has been a source of scientific fascination since being visited by the Voyager missions, and with its thick atmosphere, there are questions as to whether it is similar to an early Earth. Beginning in 1990, NASA and the European Space Agency developed the Cassini-Huygens mission to investigate Titan up close by sending a probe down to the surface, during a plan fraught with difficulties.

To Catch a Falling Star

To Die - To Live, The Survivors of Hiroshima

To Engineer Is Human

Toil, Sweat & Tears

To Infinity and Beyond...

Tomorrow's World: A Horizon Special

Too Big Too Soon?

Too Close to the Sun

Total Isolation

Six people are taking part in an experiment in which they are deprived of the senses, and subjected to solitary confinement in an effort to understand the impact on the human body and mind. The research follows on the back of the increased use of solitary confinement for terrorism suspects as well as conditions that soldiers have been subjected to in prisoner of war confinement.

Tots and Quots and Woodgerie

Towers of Ilium / The Exploding City

Town Traffic and Tomorrow

Toxic Town: The Corby Poisonings

Traces of Murder

Tracks on the Oregon Trail

T-Rex Exposed

T. Rex, Warrior or Wimp?

Trial and Error, The Rise and Fall of Gene Therapy

Trial Babies

Trial in the Jungle

Tropical Time Machine

Tsunami, Naming the Dead

Turned on by Danger

New science, lead by Polly Matzinger, is being done on the immune system which could turn the knowledge of the immunology field upside-down. Named the Danger Model, the works looks at how the body's immune system works and is activated, and the process by which it fights off foreign objects in the body, in the hope of improving transplant success, though the work isn't without its detractors.

Tutankhamun's Fireball

TV Is Dead, Long Live TV

Twenty-First Birthday

Twice Born

Twice Five plus the Wings of a Bird

Ulcer Wars

Uranium Goes Critical

An increase in the mining of Uranium raises questions about how long we have until resources are depleted. As its use in energy production has increased significantly, the supplies are struggling to keep up with anticipated demand, for a material which was once more heavily used in glassware and pottery. However, its potential as an efficient energy source was discovered with Fermi's experimentation with the material.

Uranus Encounter

Voyager 2 paid a visit to Uranus in 1986 to build on the little previous knowledge about the planet that was known. Discoveries were made about its atmosphere composition, ring structure, and orbiting satellites. The results of the trip also raised a number of questions such as how its moon Oberon came to have a large mountain-like structure, while Titania has large rifts on the surface of what is believed to be an icy body.

Valley of the Inca

Vanished, The Plane That Disappeared


Vitamin Pills: Miracle or Myth?

Voices from Silent Hands

Volcanoes of the Deep

The world's most sophisticated submarine machinery is allowing scientists to head to the bottom of the oceans to find out more about the deep-lying volcanoes and their impact on the planet. The scientific team set about engineering a solution to recover a number of hydrothermal vents from the depths of the sea with the plan is to use the collected rock to understand how lifeforms came about on Earth.

Volcano Hell

Waiting for a Heartbeat

Wasting the Alps

After the 1987 flood in the foothills of the Alps which resulted in the death of tens of people, questions are now being asked about how many further damage the area can take from human development caused by the tourist industry. The Alps have also exacerbated inequality as floods and landslides caused by both development and abandonment has left the delicate eco-systems and communities struggling.

Water, Water...

We Are the Aliens

We Love Cigarettes

The love affair with cigarettes around the world has been one of the most successful and most deadly in human history. As the death of the cigarette draws closer in the United Kingdom with the smoking ban being introduced in 2007, as well as laws and programmes in other countries, the effect of smoking is analysed along with the struggles of how people can quit the habit, as society divides over smoking and non-smoking.

We Need to Talk About Death

West of Bangalore

Whales, Dolphins and Men

What a Waste!

What Einstein Never Knew

Whatever Happened to Star Wars?

Whatever Happened to the Energy Crisis?

What Every Girl Should Know

What Happened Before the Big Bang?

What Is One Degree?

What Is Race?

What Is Reality?

What Kind of Doctor?

What Little Girls Are Made Of

What Makes a Genius?

What Makes an Animal Smart?

What Makes a Psychopath?

What Makes Us Clever? A Horizon Guide to Intelligence

What Makes Us Human?

What on Earth Is Wrong with Gravity?

What Price Steak?

What Really Killed the Dinosaurs?

What Sank the Kursk?

What's Killing Our Bees? A Horizon Special

Bill Turnbull presents the situation around what is killing off large numbers of bees. Looking at a variety of causes such as the weather, parasites, and pesticides, scientists are attempting to study the insects in the hope of discovering more about their lives. Experiments are also being conducted to analyse the impact of neonicotinoids on insect populations, and whether the ban in Europe will have an effect. However, the answer may lie in our intensive farming practices and the lack of meadows.

What's so Big About Us?

What's the Matter with Tony Slattery?

What's the Problem with Nudity?

What's the Right Diet for You? A Horizon Special: Episode 1

What's the Right Diet for You? A Horizon Special: Episode 2

What's the Right Diet for You? A Horizon Special: Episode 3

What's Wrong with Our Weather?

What's Wrong with the Sun?

What Time Is Your Body?

Wheels Within Wheels

When Polar Bears Swam in the Thames

When the Breeding Has to Stop

Where Did the Colorado Go?

Where is Flight MH370?

After the disappearance of Malaysia Airlines MH370 from Kuala Lumpa to Beijing in 2014, evidence started to be gathered about where it could have gone, and what the potential causes for such a mystery were. Investigating an initial small amount of evidence, the discovery was made that through deliberate turns, it ended up in the opposite direction and believed to have crashed in the southern Indian Ocean.

Where Must the Money Go? / Phantoms Incorporated

Where Nothing Happens Twice

Where's My Robot?

Which Universe Are We In?

Whispers of Creation

Who Built Stonehenge?

Who Do You Want Your Child to Be?

Who Needs Skill?

Who's Afraid of a Big Black Hole?

Who's Afraid of Designer Babies?

Whose Coast?

Who Will Deliver Your Baby?

Who Will Make Me Better?

Why Are Thin People Not Fat?

Why Are We Getting So Fat?

Why Buildings Make You Sick

Why Can't We Predict Earthquakes?

Why Did I Go Mad?

Why Did Stuart Die?

Why Do Viruses Kill?

Why Do We Dream?

Why Do We Talk?

Wildlife, The Last Great Battle

Will Art Last?

Willingly to School?

Windows of the Soul / Elixir of Youth

Wings of Angels

Winning Gold in 2012

Wolves and Wolfmen

Woof! A Horizon Guide to Dogs

Worlds in Collision

Dr. Immanuel Velikovsky gained notoriety in America between the 1950's and 1970's with his work on social issues of the time based on events of the past, after the publication of his work Worlds in Collision. In the work, Velikovsky argues that Earth suffered catastrophic close contacts with other planets such as Venus and Mars leaving people to question whether he is a great thinker or nonsensical crank.

Wot U Lookin At?

You Are Old, Father William

You Do as You Are Told

Your Country Needs You

Zero G