Episode 1
The Book of Man
1h
Horizon looks again at the Human Genome Project which aims to decipher or sequence all genes.
Where to watch Horizon
TV series
Horizon
1964TV-PG62 seasons7.4 / 10
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Availability
Not streaming in United States
Checked Jul 22, 2026
Horizon premiered February 4, 1964. We don't have a confirmed streaming, rental or purchase option yet.
Synopsis
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 26 episodes
Choose an episode, then use the watch options above for the show.
Episode 2
The Poison that Waits
1h
Horizon reports on the abnormally high incidence of and the early onset of diseases such as senile dementia and Parkinson's disease on the island of Guam in the Pacific. Scientists have now linked the diseases to a poison in the native cycad fruit.
Where to watch HorizonEpisode 3
Perils of the Deep
1h
In this episode, Horizon presents evidence that even diving in relatively shallow waters can cause serious long term damage to the brain and spinal cord.
Where to watch HorizonEpisode 4
Smart Weapons
1h
This documentary by Horizon demonstrates how smart Weapons use computers to destroy targets, that until now, were only able to be threatened by nuclear weapons.
Where to watch HorizonEpisode 5
Wasting the Alps
1h
Horizon looks at the damaging effects of pollution and tourism on the Swiss Alps in Europe.
Where to watch HorizonEpisode 6
In the Last Resort
1h
Horizon answers the question: What are the alternatives for the elderly in Britain who can't live at home, or in a rest home or nursing home, or part of a sheltered accommodation?
Where to watch HorizonEpisode 7
Gaze in Wonder
1h
Horizon brings you an interview with Prof. Eric Laithwaite who presents an engineer's personal view of nature and how new inventions already exist in nature.
Where to watch HorizonEpisode 8
In My Lifetime?
1h
In this episode, Horizon presents an investigation into the state of medical research in neurological disorders and the issues with its funding in Britain.
Where to watch HorizonEpisode 9
Concerto
1h
This documentary by Horizon investigates new technology applied to music.
Where to watch HorizonEpisode 10
Black Schizophrenia
1h
Horizon covers the story of the Nottingham psychiatrists who study the human race to see who is mostly likely to develop schizophrenia.
Where to watch HorizonEpisode 11
Trial in the Jungle
1h
This Horizon report covers the Tasaday, a remote Philippine tribe apparently living in the stone age, who are now seen as a hoax. How did they do it?
Where to watch HorizonEpisode 12
Who Will Make Me Better?
1h
Horizon explores three types of alternative medicine; homoeopathy, acupuncture, and diagnosing food allergies by testing your toes.
Where to watch HorizonEpisode 13
A Wonderful Life
1h
Horizon presents a biography of the philosopher Ludwig Wittgenstein who lived from 1889 to 1951.
Where to watch HorizonEpisode 14
Why Buildings Make You Sick
1h
This is a Horizon documentary about an investigation into the so-called "sick building syndrome" where occupants contract illnesses because of the environment within the building.
Where to watch HorizonEpisode 15
Jubilee
1h
How valid have been Horizon's criticisms of scientific orthodoxy and to what effect have the programs had?
Where to watch HorizonEpisode 16
Crash
1h
Horizon investigates how many of the tragedies on our roads in Britain could be avoided by the introduction of technical and legislative changes.
Where to watch HorizonEpisode 17
The New Sixth Sense
1h
Horizon follows J. Hooper, a diabetic, as she explores various aspects of biosensor technology.
Where to watch HorizonEpisode 18
Clive Sinclair: The Anatomy of an Inventor
1h
Horizon presents a profile of noted inventor Clive Sinclair with his family and colleagues reminiscing and analysing his successes and failures.
Where to watch HorizonEpisode 19
Newpin: A Lifetime
1h
In this story, Horizon explores how the destructive patterns of child abuse and depression can be broken by concentrating on the mothers of young children.
Where to watch HorizonEpisode 20
Time of Darkness
1hfinale
In this Horizon episode, we look at the effects on the climate from volcanic eruptions.
Where to watch HorizonEpisode information updated Jul 25, 2026
Available now in United States
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Cast
Richard Branson
Nicholas SoamesBob Brier
Robert Winston
Robert GalloTrevor R. Bryce
Joshua Wurman
Bill PatersonProduction details
- Status
- Returning Series
- Series type
- Documentary
- Episodes
- 1,173
- Original language
- English
Networks & production
BBC TwoUnited Kingdom
Themes
philosophyscience