As of July 2026, Horizon Season 9 aired in 1972 with 33 episodes — streaming now on PBS. Full episode guide and where to watch below.
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Horizon Season 9

1972 33 Episodes Documentary ⭐ 7/10

Right now you can watch Horizon Season 9 on — and it earns the access it was given. A single, tightly-focused season means there is plenty to get through without ever feeling padded. 34 people have weighed in on TMDB, and the verdict leans heavily positive. The access the production secured is remarkable, and it does justice to it. Put it on tonight and see for yourself.

Whatever else is competing for your attention this week, Horizon Season 9 is worth clearing space for. What makes Horizon Season 9 work is a willingness to sit with complexity instead of resolving it neatly. Season 9 of Horizon includes 33 episodes. It aired from January 1972 to December 1972. Episodes include "The Missing Link", "Navajo - The Last Red Indians", "How Much Do You Smell?". It was aired in 1972. What elevates Horizon Season 9 above most documentary work is a refusal to settle for the easy version of the story. It knows exactly what it is, and does not try to be anything else.

Anyone after documentary work that genuinely informs rather than confirms will value Horizon Season 9. If you have run out of similar titles to watch, this is a strong next pick. Short enough to finish in a weekend, substantial enough to feel satisfying. 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 9

🇺🇸 United States
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🎬 Horizon Season 9 — Episode Guide

E1
The Missing Link
1972-01-03
In this episode of Horizon, you find out how feasible it is to build a 35 mile long tunnel between Britain and France.
E2
Navajo - The Last Red Indians
1972-01-10
Horizon explores the American Navajo indian tribe of New Mexico, in the United States.
E3
How Much Do You Smell?
1972-01-17
Why do humans have such a poor sense of smell as compared to animals? Horizon investigates why.
E4
The Parasite of Paradise
1972-01-31
This story by Horizon reports on Malaria in the country of Gambia, in West Africa.
E5
The Day it Rained Periwinkles
1972-02-07
Horizon investigates reports of strange phenomena and about what the scientific theory is about these phenomena.
E6
Are You Doing This for Me Doctor, or Am I Doing It for You?
1972-02-14
Horizon explores if a doctor's treatment of the patient is always in the best interest of the patient.
E7
How They Sold Doomsday
1972-02-21
In this episode, Horizon looks the the ecological movement, and the resistance against the movement in Britain, and the USA.
E8
For Love or Money?
1972-02-28
In this report by Horizon, the effect of boring jobs on industrial relations is looked at, along with work and job satisfaction.
E9
Whales, Dolphins and Men
1972-03-06
Horizon looks at the life of whales and dolphins, and how they interact with man.
E10
What Is Race?
1972-03-13
Horizon investigates the various conceptions of "race" that have arisen since the 17th century.
E11
The Man-Made Lakes in Africa
1972-03-20
Horizon investigates the use of hydroelectric power in Africa, at Lake Kariba, Lake Volta, and Lake Nasser.
E12
Survival in the Sahara
1972-03-27
This episode of Horizon follows the expedition of two German naturalists exploring the Northwestern desert of the Sahara in Africa.
E13
Mind Over Body
1972-04-10
This story by Horizon is about American research into techniques for controlling bodily functions with the mind.
E14
Out of Volcanoes
1972-04-17
In this report, Horizon looks at the various aspects of volcanoes and explaining the views of some vulcanologists.
E15
The Wizard Who Spat on the Floor
1972-05-01
Horizon presents a study of Thomas Alva Edison and his achievements as an inventor.
E16
Rail Crash
1972-05-08
Horizon reviews the history of train accidents and the new safety precautions to prevent them.
E17
Do You Dig National Parks?
1972-05-22
Horizon investigates the threat to the Snowdonia National Park in Britain, from mining companies.
E18
Sorry I Opened My Mouth
1972-06-12
Horizon reports on modern research in the prevention of tooth decay.
E19
The Way We Move
1972-07-03
How do muscles contract and how are they are controlled from the brain through nerve fibers are the subjects of this Horizon episode.
E20
The Life that Lives on Man
1972-07-10
This episode of Horizon explores bacteria and other creatures that live on our skin and in our hair.

📋 All Seasons of Horizon

Season 1Season 2Season 3Season 4Season 5Season 6Season 7Season 8

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