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Season guide

Horizon: 1974

33 episodes Premiered Jan 7, 1974 Updated Sep 25, 2026
Previously on Horizon

Season 11 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 10.
  • ⚡ 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 11 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 11 Progress Shield

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Binge Efficiency Engine

Season 11: Filler vs. Essential Canon

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

9%
91%
Mytharc (3): Crucial lore & season climaxes
Core (30): Character development & subplots
Side Quest (0): Standalone / filler
S11·E1 Mytharc

A Matter of Self-Defense

Jan 7, 1974 · 60 min

This episode of Horizon explains how our body fights infections and cancers and brings us up-to-date on recent research in immunology.

S11·E3 Core

Never Too Late to Learn

Jan 21, 1974 · 60 min

Horizon reports on the British Open University and how it operates.

S11·E4 Core

The Great Fish Hunt

Jan 28, 1974 · 60 min

Horizon investigates how Britain has hunted fish in the past and how improved fish catching techniques have severely reduced fish stocks.

S11·E5 Core

Pedal Power

Feb 4, 1974 · 60 min

This episode of Horizon is about the history of the bicycle and the possibility of it being able to ease the traffic problems in Britain.

S11·E6 Core

The Writing on the Wall

Feb 11, 1974 · 60 min

In this episode, Horizon looks at connections between crime and poor housing design in the USA.

S11·E7 Core

Where Did the Colorado Go?

Feb 18, 1974 · 60 min

Horizon investigates reports of abuse of the Colorado river in the USA.

S11·E8 Core

The Future Goes Boom

Mar 4, 1974 · 60 min

Horizon examines the British Hudson Institute's methods and predictions for the future of economics.

S11·E9 Core

Fusion: The Energy Promise

Mar 11, 1974 · 60 min

In this Horizon episode, we look at attempts by scientists to solve the energy crisis of future by building nuclear fusion reactors.

S11·E10 Core

The First Ten Years

Apr 22, 1974 · 60 min

In this report, Prof. John Maynard Smith looks back at some of the subjects Horizon has presented since 1964.

S11·E12 Core

The Hunting of the Quark

May 6, 1974 · 60 min

This Horizon episode is about the search for quarks, thought to be the substance of which electrons, protons, and neutrons are made of.

S11·E13 Core

A Noah's Ark for Europe

May 13, 1974 · 60 min

Horizon investigates captive animal breeding to prevent extinction of animal species in the wild.

S11·E15 Core

Search for Life

Jun 10, 1974 · 60 min

Documentary about the origins of life which attempts to find out what happened in the one billion years before fossil evidence begins.

S11·E16 Core

The Secrets of Sleep

Jun 10, 1974 · 60 min

Horizon investigates the subject of sleep in Britain and the USA.

S11·E17 Core

Who Needs Skills?

Jun 24, 1974 · 60 min

In this episode of Horizon, you learn about transferring the basis of modern industry production from human skills to computer programmed machines.

S11·E18 Core

Hills of Promise

Jul 1, 1974 · 60 min

In this report, Horizon presents the state of hill farming in Wales.

S11·E19 Core

The Race for the Double Helix

Jul 8, 1974 · 60 min

This documentary of Horizon reports on the discovery of the structure of DNA in 1953 by Dr. Francis Crick and Prof. James Watson.

S11·E20 Core

The Immigrant Doctors

Jul 15, 1974 · 60 min

In this episode, Horizon reports on the rising number of imigrant doctors working in the National Health System of Britain.

S11·E21 Core

Mines, Minerals and Men

Jul 22, 1974 · 60 min

Horizon explores the technological and economic reasons for the mining revival in Britain.

S11·E22 Core

What Price Steak?

Jul 29, 1974 · 60 min

Horizon reports on the beef crisis and rising prices.

S11·E23 Core

Listen and Be Loyal

Aug 5, 1974 · 60 min

Horizon brings you a report by Tom Harrison on anti-nazi propaganda in Britain during World War II.

S11·E24 Core

Adam or Eve?

Aug 12, 1974 · 60 min

This episode of Horizon investigates the role that hormones play in the stages of mammalian sexual development.

S11·E25 Core

An Unholy Scramble

Sep 2, 1974 · 60 min

Horizon investigates some of the risks and problems involved in bringing oil from the North Sea ashore.

S11·E26 Core

Do as You Are Told

Oct 28, 1974 · 60 min

This report by Horizon explores how far people are prepared to suppress their own moral scruples in the face of necessity to obey authority.

S11·E27 Core

The First Signs of Washoe

Nov 4, 1974 · 60 min

Horizons reviews the scientific work of Americans in the field of research in communication with animals.

S11·E28 Core

The Other Way

Nov 11, 1974 · 60 min

Horizon presents Dr. Schumacher's theory that use of modern technology could make the working week a creative experience.

S11·E29 Core

The Greatest Advance Since the Wheel?

Nov 25, 1974 · 60 min

Sixty years ago a Dutch scientist discovered a phenomenon that overturned the electrical rule book. By cooling certain metals to incredibly low temperatures he found they could con

S11·E30 Core

Joey

Dec 9, 1974 · 60 min

This story by Horizon reconstructs the true life story of Joey Deacon.

S11·E31 Core

The Neglected Harvest

Dec 16, 1974 · 60 min

Horizon investigates the developments and research in forestry which may now help to overcome shortage of timber.

S11·E32 Mytharc

How on Earth Did They Do That?

Dec 23, 1974 · 60 min

This documentary by Horizon reports on the development of cinematographic special effects from 1890's to date.

S11·E33 Mytharc

The Lysenko Affair

Dec 30, 1974 · 60 min

Horizon presents a dramatized documentary on the rise to power of Trofim Denisovich Lysenko, a young Ukrainian agriculturalist.

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