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Season guide

Horizon: 1971

32 episodes Premiered Jan 4, 1971 Updated Sep 25, 2026
Previously on Horizon

Season 8 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ Directly follows the overarching narrative developments of Horizon Season 7.
  • ⚡ Faction dynamics and core character alliances shift under escalating external stakes.
  • ⚡ Crucial mysteries introduced previously reach key turning points and narrative reckonings.
  • ⚡ Sets up serialized story arcs that build directly toward the climactic season finale.
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Season 8 Episodes

Episode Guide

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Season 8 Progress Shield

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Season 8: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

9%
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Mytharc (3): Crucial lore & season climaxes
Core (29): Character development & subplots
Side Quest (0): Standalone / filler
S8·E1 Mytharc

Wildlife - The Last Great Battle

Jan 4, 1971 · 60 min

In this episode, Horizon looks a the efforts of zoos to save animal species from extinction by breeding enough to ensure their survival in captivity

S8·E2 Core

Great Ormond Street

Jan 18, 1971 · 60 min

In this episode, Horizon looks at the renowned British hospital for children, Great Ormond Street, and the Institute of Child Health.

S8·E3 Core

A Bulldozer Through Heaven

Jan 25, 1971 · 60 min

Horizon explores the island of New Guinea and its cultural changes going on there.

S8·E4 Core

Rumors of War

Feb 1, 1971 · 60 min

This episode of Horizon looks at the growing arsenal of nuclear weapons over the last 25 years and the effects it has on the arms race.

S8·E5 Core

I'm Dependent - You're Addicted (I)

Feb 15, 1971 · 60 min

The first of a two-programme investigation in which Horizon and Man Alive have combined forces. This episode investigates the facts about drug abuse and experimental work undertake

S8·E6 Core

Kuru - To Tremble with Fear

Feb 22, 1971 · 60 min

Kuru is a unique disease of the people of New Guinea. Horizon goes with Prof. E. J. Field to find out why.

S8·E8 Core

What Kind of Doctor?

Mar 15, 1971 · 60 min

Horizon investigates medical student training at the St. Thomas hospital in London, England.

S8·E10 Core

The Wood

Apr 5, 1971 · 60 min

This report by Horizon looks at the long term ecological study of the forest at Wytham Wood, Oxon, in England.

S8·E11 Core

The Measure of Man

Apr 12, 1971 · 60 min

In 1971, Horizon reviews the life and work of Prof. Hans Eysnck, the most controversial psychologists of the time.

S8·E12 Core

Three Score Years and Then?

Apr 26, 1971 · 60 min

This report by Horizon explores care for the aged, for both medical and welfare services in Britain.

S8·E13 Core

Darwin's Bulldog

May 3, 1971 · 60 min

Horizon reports on the famous protagonist of "The Origin of Species," Thomas Henry Huxley.

S8·E14 Core

The Secret

May 10, 1971 · 60 min

This episode of Horizon examines how cells organize to become complex organs, and bodies.

S8·E15 Core

What Every Girl Should Know

May 17, 1971 · 60 min

At the moment, legal abortions in the UK are being performed at the rate of over 90,000 a year and it is considered that the number is likely to rise. But why are so many people no

S8·E16 Core

Tastes of Foods to Come

May 24, 1971 · 60 min

Horizon reports on food technology now experimenting with meat substitutes.

S8·E17 Core

Looking for a Happy Landing

May 31, 1971 · 60 min

Within 20 years vertical take-off airliners could be hovering over Hampstead and Dulwich before landing, one a minute, day and night, at a Thames-side V-port. Horizon looks at what

S8·E18 Core

A Case of Depression

Jun 7, 1971 · 60 min

Horizon investigates how to treat depressive illneses.

S8·E19 Core

The Total War Machine

Jun 14, 1971 · 60 min

This episode of Horizon reports on the development of the aircraft bomber throughout periods of war.

S8·E20 Core

The Dinosaur Hunters

Jun 21, 1971 · 60 min

Horizon explores the field of palaeontology, the study of dinosaurs.

S8·E21 Core

Your Country Needs You?

Sep 27, 1971 · 60 min

This episode of Horizon looks at Britain's civil defense program, and to see if it is adequate in the event of a nuclear war.

S8·E22 Core

Rheumatism

Oct 4, 1971 · 60 min

Horizon investigates rheumatism, and looks at why this disease is under-researched.

S8·E24 Core

One Liverpool or Two?

Oct 18, 1971 · 60 min

Do city planners in Liverpool have unrealistic expectations? Horizon looks into the development and planning process of Liverpool, England.

S8·E25 Core

Rutherford / The Cavendish Today

Oct 25, 1971 · 60 min

This is a two part episode of Horizon. First, Horizon looks at the life of centenary Ernest Rutherford, followed by a report of the Cavendish Labratory in Cambridge, England.

S8·E26 Core

The Fierce People

Nov 1, 1971 · 60 min

Horizon explores a primitive tribe of Yanomamo Indians living in southern Venezula.

S8·E27 Core

The Men Who Painted Caves

Nov 15, 1971 · 60 min

This episode of Horizon looks in the ancient cave paintings found in France.

S8·E28 Core

The Crab Nebula

Nov 22, 1971 · 60 min

This episode of Horizon reports on how the Crab Nebula was discovered, and continuing observation of the space encounter.

S8·E29 Core

Can Venice Survive?

Nov 29, 1971 · 60 min

Horizon reports on the continuing problem of the city of Venice, Italy sinking into the sea.

S8·E30 Core

Willingly to School?

Dec 6, 1971 · 60 min

This report by Horizon is about Prof. Hean Piaget and her child center education theory.

S8·E31 Mytharc

The Periscope War

Dec 20, 1971 · 60 min

Horizon presents the history of the submarines, from pre-World War I to today's nuclear powered submarines.

S8·E32 Mytharc

Patently Absurd

Dec 27, 1971 · 60 min

This episode of Horizon investigates strange new inventions.

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