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Horizon

Horizon

1964Returning Series61 Seasons1173 Episodes7.4TMDB
BBC Two

Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.

Season 23 Episodes

Browse every episode and jump into details.

Episode 1: Are You a Racist?

Jan 6, 1986 · 1h

Horizon presents a documentary about how white racists and black victims of racism volunteered to spend time in an isolated house living and talking about their prejudices.

Episode 2: Genesis

Jan 13, 1986 · 1h

This Horizon episode is about the discovery of a molecular key which may literally unlock the mystery of life for all creatures.

Episode 3: Bitter Cold

Jan 20, 1986 · 1h

Horizon presents a documentary on scientists who take themselves to Antarctica in 1980 to act as physical and mental guinea pigs.

Episode 8: The New Face of Leprosy

Mar 3, 1986 · 1h

This episode of Horizon documents leprosy in the USA and India with a focus on medical developments for it's cure and control.

Episode 10: In the Wake of HMS Sheffield

Mar 17, 1986 · 1h

Will the new strategies and weapons introduced because of the Falklands war be a match for the next generation of weapons? Horizon presents this documentary to answer that question.

Episode 11: AIDS: A Strange and Deadly Virus

Mar 24, 1986 · 1h

Horizon looks at the virus that causes AIDS and the research into vaccines and drugs being developed to counteract the devastating disease of the immune system.

Episode 12: The Case of the Frozen Addict

Apr 7, 1986 · 1h

In this documentary, Horizon reports on how doctors in America found that addicts using designer drugs developed Parkinson's Disease-like symptoms.

Episode 13: Nice Guys Finish First

Apr 14, 1986 · 1h

In the interview by Horizon, Richard Dawkins discusses selfishness and cooperation, arguing that evolution often favours co-operative behaviour, and focusing especially on the tit for tat strategy of the prisoner's dilemma game.

Episode 14: The Men Who Bottled a Cow

Apr 21, 1986 · 1h

This is an interesting Horizon presentation on decoys that look and smell like cows to the tsetse fly who carry a disease fatal to farm animals.

Episode 16: What Makes an Animal Smart?

May 12, 1986 · 1h

This report by Horizon takes a look at the instinctive side of intelligence in animals that shows us that we owe more to instinct than we may care to think.

Episode 18: Uranus Encounter

May 26, 1986 · 1h

In this episode, Horizon brings you Voyager's encounter with Uranus and the mysteries that are being relayed back to the scientists.

Episode 19: Who Built Stonehenge?

Jun 9, 1986 · 1h

Horizon presents an interview with Prof. C. Renfrew as he questions the accepted wisdom about the origins of Stonehenge in England.

Episode 23: Doctors to Be

Jun 30, 1986 · 1h

In a unique project, Horizon follows a group of medical students into the next century.

Season 23 FAQ

Quick answers about this season's release timeline and episode lineup.

When did Horizon Season 23 premiere?

Horizon Season 23 premiered on January 6, 1986.

How many episodes are in Horizon Season 23?

Horizon Season 23 has 22 episodes.

What is the first episode of Horizon Season 23?

The season opens with Season 23 Episode 1, "Are You a Racist?". It aired on January 6, 1986.

Go to Season 23 Episode 1

Where to Watch

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