Episode 1
The Transpanted Brain
1h
This episode of Horizon looks at a new approach that holds hope for the treatment of Parkinson's Disease.
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 25 episodes
Choose an episode, then use the watch options above for the show.
Episode 2
Death of a Star
1h
Horizon documents the first sighting of a star in supernova at its initial stages. The study of the spacial event provides fascinating insight into the life of our own universe.
Where to watch HorizonEpisode 3
Playing With Madness
1h
In the report by Horizon, they looks at manic depression and how is now known that it has a strong genetic component.
Where to watch HorizonEpisode 4
The Canal in the Jungle
1h
This episode of the Horizon explores the Panama Canal, now a billion dollar commercial sea crossroad between continents. The future of the canal is in danger because of damage to rain forests.
Where to watch HorizonEpisode 5
Death of the Working Classes
1h
Horizon investigates how those who are born into a working class family are at greater risk of dying early than if born a child of the professional classes.
Where to watch HorizonEpisode 6
The Greenhouse Effect
1h
This documentary report by Horizon examines the devastating effects of the Greenhouse Effect (earth's temperature rising) and how man is causing it.
Where to watch HorizonEpisode 7
Struggling for Control
1h
This is a Horizon report on Britain's air traffic control capabilities and the use of outdated and unreliable equipment.
Where to watch HorizonEpisode 8
Thinking
1h
Explores the limits of digital computers and artificial intelligence. Includes the views of John Searle, a philosopher at the University of California who refutes the claims for 'thinking' machines.
Where to watch HorizonEpisode 9
Patients on Trial
1h
Horizon looks at the experimental treatment of four cancer patients in the USA who have volunteered to try the LAK/Interleuken 2 treatment.
Where to watch HorizonEpisode 10
Purple Warrior - Rules of Engagement
1h
This is part one of a two-part series by Horizon reporting on a military exercise code named Purple Warrior which is designed to test lessons learned during the Falklands war.
Where to watch HorizonEpisode 11
Purple Warrior - Limited War
1h
This is part two of a two-part series by Horizon reporting on a military exercise code named Purple Warrior which is designed to test lessons learned during the Falklands war.
Where to watch HorizonEpisode 12
The Heart of Another
1h
Horizon looks at the progress of two heart disease patients at Montreal's Royal Victoria Hospital in Britain.
Where to watch HorizonEpisode 13
Easter Islands - The Secret
1h
This is part one of a two-part Horizon series about the mystery of Easter Island, the stone statues, and the civilization that erected them.
Where to watch HorizonEpisode 14
Easter Islands - The Story
1h
This is part two of a two-part Horizon series about the mystery of Easter Island, the stone statues, and the civilization that erected them.
Where to watch HorizonEpisode 15
Doctors to Be - Trial by Interview
1h
Horizon presents part one of a three-part series on the education of doctors in Britain. In this episode, we look at the ordeal of an interview faced by two potential students applying to St. Mary's Medical School.
Where to watch HorizonEpisode 16
Doctors to Be - The Knowledge
1h
Horizon presents part two of a three-part series on the education of doctors in Britain. In this episode, we examine the first two years of education at St. Mary's Medical School and at the exams that have to be passed.
Where to watch HorizonEpisode 17
Doctors to Be - Welcome to the Real World
1h
Horizon presents part three of a three-part series on the education of doctors in Britain. In this episode, a group of medical students are followed from the beginning of their third year of medical education up to the point where they meet patients for the first time.
Where to watch HorizonEpisode 18
Cancer at Bay
1h
Horizon investigates if changes in lifestyle could reduce the risks of cancer.
Where to watch HorizonEpisode 19
Traces of Murder
1h
In this documentary, Horizon explores how to solve murder cases with the help of new technology.
Where to watch HorizonEpisode 20
The Hope of Progress
1h
Horizon interviews the scientist and Nobel prize winner, Peter Medawar.
Where to watch HorizonEpisode 21
A Newsday Revolution
1h
This report by Horizon covers how the electronic revolution in television news affects the way it is gathered, edited, and presented.
Where to watch HorizonEpisode 22
A Good Test?
1h
Horizon investigates the use of psychological techniques in job recruitment and career development.
Where to watch HorizonEpisode 23
Superconductor - The Race for the Prize
1h
This Horizon episode presents the breakthroughs in superconductivity research in several countries.
Where to watch HorizonEpisode 24
Believe Me
1h
Horizon brings you a report on Myalgic Encephalomyelitis which is a neurological disease that has been puzzling doctors for more than 30 years.
Where to watch HorizonEpisode 25
The Quest for Tannu Tuva
1hfinale
Richard Feynman was not only an iconoclastic and influential theoretical physicist and Nobel laureate but also an explorer at heart. Feynman through video recordings and comments from his friend and drumming partner Ralph Leighton tell the extraordinary story of their enchantment with Tuva, a strange and distant land in the centre of Asia. While few Westerners knew about Tuva, Feynman discovered its existence from the unique postage stamps issued there in the early 20th century. He was intrigued by the unusual name of its capital, Kyzyl, and resolved to travel to the remote, mountainous land. However, the Soviets, who controlled access, were mistrustful, unconvinced that he was interested only in the scenery. They obstructed his plans throughout 13 years. The majority of the scenes are extended narratives by Feynman. There is included a delightful extended discussion and demonstration of Feyman's bongo playing. Feynman explains how he used a phrase book of the Tuva language to write and express an interest in visiting there. The proposed trip took years to arrange. The programme never does get to show Feyman in Tuva; he died of abdominal cancer a few days after the recorded interview, at age 69 in February 1988. The story is interspersed with earlier recorded conversations by Feynman that add his perspectives on the nature of physics. So, this is not a travel documentary at all; rather it is another fascinating insight into the exciting personality of Richard Feynman. "You have no responsibility to live up to what other people think you ought to accomplish." - Richard Feynman (1918-1988).
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