Episode 1
The Missing Link
1h
In this episode of Horizon, you find out how feasible it is to build a 35 mile long tunnel between Britain and France.
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 9 episodes
Choose an episode, then use the watch options above for the show.
Episode 2
Navajo - The Last Red Indians
1h
Horizon explores the American Navajo indian tribe of New Mexico, in the United States.
Where to watch HorizonEpisode 3
How Much Do You Smell?
1h
Why do humans have such a poor sense of smell as compared to animals? Horizon investigates why.
Where to watch HorizonEpisode 4
The Parasite of Paradise
1h
This story by Horizon reports on Malaria in the country of Gambia, in West Africa.
Where to watch HorizonEpisode 5
The Day it Rained Periwinkles
1h
Horizon investigates reports of strange phenomena and about what the scientific theory is about these phenomena.
Where to watch HorizonEpisode 6
Are You Doing This for Me Doctor, or Am I Doing It for You?
1h
Horizon explores if a doctor's treatment of the patient is always in the best interest of the patient.
Where to watch HorizonEpisode 7
How They Sold Doomsday
1h
In this episode, Horizon looks the the ecological movement, and the resistance against the movement in Britain, and the USA.
Where to watch HorizonEpisode 8
For Love or Money?
1h
In this report by Horizon, the effect of boring jobs on industrial relations is looked at, along with work and job satisfaction.
Where to watch HorizonEpisode 9
Whales, Dolphins and Men
1h
Horizon looks at the life of whales and dolphins, and how they interact with man.
Where to watch HorizonEpisode 10
What Is Race?
1h
Horizon investigates the various conceptions of "race" that have arisen since the 17th century.
Where to watch HorizonEpisode 11
The Man-Made Lakes in Africa
1h
Horizon investigates the use of hydroelectric power in Africa, at Lake Kariba, Lake Volta, and Lake Nasser.
Where to watch HorizonEpisode 12
Survival in the Sahara
1h
This episode of Horizon follows the expedition of two German naturalists exploring the Northwestern desert of the Sahara in Africa.
Where to watch HorizonEpisode 13
Mind Over Body
1h
This story by Horizon is about American research into techniques for controlling bodily functions with the mind.
Where to watch HorizonEpisode 14
Out of Volcanoes
1h
In this report, Horizon looks at the various aspects of volcanoes and explaining the views of some vulcanologists.
Where to watch HorizonEpisode 15
The Wizard Who Spat on the Floor
1h
Horizon presents a study of Thomas Alva Edison and his achievements as an inventor.
Episode credits
Guest stars Thomas A. Edison
Episode 16
Rail Crash
1h
Horizon reviews the history of train accidents and the new safety precautions to prevent them.
Where to watch HorizonEpisode 17
Do You Dig National Parks?
1h
Horizon investigates the threat to the Snowdonia National Park in Britain, from mining companies.
Where to watch HorizonEpisode 18
Sorry I Opened My Mouth
1h
Horizon reports on modern research in the prevention of tooth decay.
Where to watch HorizonEpisode 19
The Way We Move
1h
How do muscles contract and how are they are controlled from the brain through nerve fibers are the subjects of this Horizon episode.
Where to watch HorizonEpisode 20
The Life that Lives on Man
1h
This episode of Horizon explores bacteria and other creatures that live on our skin and in our hair.
Where to watch HorizonEpisode 21
Sex Can Be a Problem
1h
In this episode by Horizon, we take a look at sexual problems, particularly for impotence, frigidity, and premature ejaculation.
Where to watch HorizonEpisode 22
The Surgery of Violence
1h
Horizon explores the development and techniques of brain surgery from the 1950's to present-day in Britain and the USA.
Where to watch HorizonEpisode 23
Hospital, 1922
1h
Horizon reconstructs a day in the life of the old Charing Cross Hospital in Britain just fifty years ago.
Episode credits
Directed by Brian Gibson
Episode 24
When Polar Bears Swam in the Thames
1h
This episode of Horizon looks the how the ice age physically shaped the British landscape.
Where to watch HorizonEpisode 25
The Making of the English Landscape
1h
This episode of Horizon illustrates the ideas of Prof. W.G. Hoskins on the development of the English landscape from Iron Age times to the present.
Where to watch HorizonEpisode 26
Shadows of Bliss
1h
Horizon reports that High Energy Physics shows a pattern of thought that challenges the very roots of commonplace belief.
Where to watch HorizonEpisode 27
The Billion-Dollar Marsh
1h
This episode of Horizon is about the east coast marshes of America, called the "Wetlands" and the effects of urban development on the wildlife.
Where to watch HorizonEpisode 28
Do You Sincerely Want a Long Life?
1h
Horizon investigates the research that is going into the ageing process to find out its causes and possible prevention.
Where to watch HorizonEpisode 29
The Making of a Natural History Film
1h
This epidsode of Horizon reports on how a group of zoologists at Oxford Scientific Films in England makes films.
Episode credits
Guest stars Paul Vaughan
Episode 31
Alaskan Pipe-Dream
1h
This episode of Horizon centers on the exploitation of oil in Alaska, and the effects of it on the Eskimoes and the local wildlife.
Where to watch HorizonEpisode 32
Their Life in Your Hands
1h
Horizon reports on people suffering from kidney diseases and the current forms of treatment.
Where to watch HorizonEpisode 33
Navigating Europe
1hfinale
Horizon documents how in Europe, they are using water canals for industrial transport, as an alternative to roads.
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