As of July 2026, Horizon Season 11 aired in 1974 with 33 episodes — streaming now on PBS. Full episode guide and where to watch below.
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Horizon Season 11

1974 33 Episodes Documentary ⭐ 7/10

Horizon Season 11 is currently streaming on , and it treats its subject with more rigour than the format usually demands. The 1-season run is exactly the right length for what it is doing. Its 7/10 TMDB score, built from 34 ratings, reflects a title that consistently delivers. The storytelling serves the subject rather than the other way around. Available now — press play and find out why people keep recommending it.

Horizon Season 11 is not trying to be everything to everyone, and that focus is exactly what makes it work. Horizon Season 11 resists the urge to oversimplify a subject that deserves better. Season 11 of Horizon includes 33 episodes. It aired from January 1974 to December 1974. Episodes include "A Matter of Self-Defense", "Bird Brain - The Mystery of Bird Navigation", "Never Too Late to Learn". It was aired in 1974. What elevates Horizon Season 11 above most documentary work is a refusal to settle for the easy version of the story. It delivers reliably on what it promises, which is more than most of its competition manages.

Anyone after documentary work that genuinely informs rather than confirms will value Horizon Season 11. It does not lean on comparisons to make its case. The complete run is available and best experienced without too much prior knowledge of where it goes. The access the production gets is remarkable, and the storytelling does full justice to it. Worth watching in order, from the beginning.

📡 Where to Watch Horizon Season 11

🇺🇸 United States
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🎬 Horizon Season 11 — Episode Guide

E1
A Matter of Self-Defense
1974-01-07
This episode of Horizon explains how our body fights infections and cancers and brings us up-to-date on recent research in immunology.
E2
Bird Brain - The Mystery of Bird Navigation
1974-01-14
This episode of Horizon is about various experiments on migratory birds and homing pigeons to try and discover how they navigate.
E3
Never Too Late to Learn
1974-01-21
Horizon reports on the British Open University and how it operates.
E4
The Great Fish Hunt
1974-01-28
Horizon investigates how Britain has hunted fish in the past and how improved fish catching techniques have severely reduced fish stocks.
E5
Pedal Power
1974-02-04
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.
E6
The Writing on the Wall
1974-02-11
In this episode, Horizon looks at connections between crime and poor housing design in the USA.
E7
Where Did the Colorado Go?
1974-02-18
Horizon investigates reports of abuse of the Colorado river in the USA.
E8
The Future Goes Boom
1974-03-04
Horizon examines the British Hudson Institute's methods and predictions for the future of economics.
E9
Fusion: The Energy Promise
1974-03-11
In this Horizon episode, we look at attempts by scientists to solve the energy crisis of future by building nuclear fusion reactors.
E10
The First Ten Years
1974-04-22
In this report, Prof. John Maynard Smith looks back at some of the subjects Horizon has presented since 1964.
E11
This Yankee Dodge Beats Mesmerism Hollow
1974-04-29
Horizon looks back at the discovery and the development of anesthesia.
E12
The Hunting of the Quark
1974-05-06
This Horizon episode is about the search for quarks, thought to be the substance of which electrons, protons, and neutrons are made of.
E13
A Noah's Ark for Europe
1974-05-13
Horizon investigates captive animal breeding to prevent extinction of animal species in the wild.
E14
Bridges: When It Comes to the Crunch
1974-06-03
Horizon reports on bridges in Britain...how safe are they?
E15
Search for Life
1974-06-10
Documentary about the origins of life which attempts to find out what happened in the one billion years before fossil evidence begins.
E16
The Secrets of Sleep
1974-06-10
Horizon investigates the subject of sleep in Britain and the USA.
E17
Who Needs Skills?
1974-06-24
In this episode of Horizon, you learn about transferring the basis of modern industry production from human skills to computer programmed machines.
E18
Hills of Promise
1974-07-01
In this report, Horizon presents the state of hill farming in Wales.
E19
The Race for the Double Helix
1974-07-08
This documentary of Horizon reports on the discovery of the structure of DNA in 1953 by Dr. Francis Crick and Prof. James Watson.
E20
The Immigrant Doctors
1974-07-15
In this episode, Horizon reports on the rising number of imigrant doctors working in the National Health System of Britain.

📋 All Seasons of Horizon

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