As of July 2026, Horizon Season 2 aired in 1965 with 24 episodes — streaming now on PBS. Full episode guide and where to watch below.
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Horizon Season 2

1965 24 Episodes Documentary ⭐ 7/10

If you want a documentary that respects its subject, Horizon Season 2 is available on right now. Across 1 season, the show has had time to find its rhythm and keep it. With 34 viewer ratings on TMDB, this is not a title flying under the radar. The storytelling serves the subject rather than the other way around. Put it on tonight and see for yourself.

Part of the current wave of titles people are actually watching, Horizon Season 2 earns its spot. Horizon Season 2 approaches its subject with the rigour that makes documentary storytelling worth taking seriously. Season 2 of Horizon includes 24 episodes. It aired from January 1965 to September 1966. Episodes include "Learning from Machines", "The Technique of Change", "Star Gazers". It was aired in 1965. What elevates Horizon Season 2 above most documentary work is a refusal to settle for the easy version of the story. There is real craft here, even in the moments that do not fully land.

Documentary fans who value serious storytelling will find Horizon Season 2 essential viewing. 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. Rigorous in a way documentary work does not always commit to. Not background viewing — it rewards your full attention.

📡 Where to Watch Horizon Season 2

🇺🇸 United States
PBS PBS
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🎬 Horizon Season 2 — Episode Guide

E1
Learning from Machines
1965-01-06
At a time when the use of teaching machines is fast expanding, Horizon looks at the principles behind them and enquires into their success
E2
The Technique of Change
1965-01-20
Horizon profiles the Bell Laboratories in the United States. They are one of the most important research and development centers where more than 4000 scientists work with a budget of one hundred million pounds every year. Horizon investigates the possibility of setting up a similar research station ...
E3
Star Gazers
1965-02-03
Horizon explores American plans to launch a space observatory to map the universe and learn how stars are created.
E4
Science and Art
1965-02-17
Horizon looks at the relationship between science and art, and also explores artists attitudes towards science.
E5
The Great Computer Scandal / H-Bomb Detectors
1965-03-03
Horizon investigates the states of big research computers in Britain. Also, Horizon looks at the H-Bomb Detectors and how British scientists have developed a nuclear explosion detector which has changed the political outlook for nuclear test controls.
E6
Forbidden Events / I am a Madman
1965-03-17
Is there a fifth force in the Universe, or must we revise our ideas about time? Horizon visits the Rutherford High Energy Laboratory where an experiment is running to settle this, and talks to Dr. Lipman.
E7
Restless Genius / Faster, Farther, Higher
1965-03-31
Prof. Andrade presents a tribute to Robert Hooke: architect, astronomer, geologist, and meteorologist who discovered the cell. This episode also includes a report on a 36 year study of the cell wall by Prof. Preston.
E8
The Other Side of the Pill
1965-04-14
Every day, on average, another 431 British women start taking the contraceptive pill. The manufacturers insist that it is the most carefully tested drug on the market today. But some scientists and doctors are concerned about the potential long-term effects of taking it.
E9
The Big Smoke / The Model Makers
1965-05-12
Nine years after the passing of the Clean Air Act, where do we stand? Scientists are gradually finding out why dirty air Is so harmful to ill persons with Dr. P. J. Lawther of Air Pollution Research Centre at St. Bartholomew's Hospital. Whenever the things they study are too big, too far off, or to...
E10
The Long Slide / Men with Gills
1965-05-26
When a rubber tyre rolls fast on a wet surface it may rise on a film of water and begin to 'aquaplane.' Scientists are studying this fact which creates a real hazard to aircraft passengers and fast drivers. A new membrane developed in America holds forth the prospect of men being able to live under...
E11
Men and Sharks / Sir Henry Dale, OM, FRS
1965-06-09
Horizon looks at Prof. Perry Gilbert's research on captured sharks and meets with the eminent physiologist Sir Henry Dale as he celebrates his 90th birthday and looks back on his career in medical research. The eminent physiologist, who celebrates his ninetieth birthday today, looks back on his fir...
E12
The Brain Gain / The Sudden Night / Learning to Speak
1965-06-23
Dr. Jacob Bronowski, who a year ago took up the deputy directorship of the Salk Institute in California, discusses with Tom Rosenthal his new activities and how he feels about working in the golden West. The recent total eclipse of the sun was probably the most closely studied ever. With special fi...
E13
Dr. Joseph Needham / Mariner IV
1965-07-14
This episode of Horizon features Dr. Joseph Needham, an eminent scientist and humanist who is perhaps the greatest living authority on China. An account of the space probe Mariner IV which will be flying past Mars tonight.
E14
Science Fiction : Science Fact? / Alone and Unarmed
1965-07-28
Is all science fiction merely fantasy - or can it give valuable clues to the future? A discussion between Desmond Morris and the ethologist George Schaller.
E15
Certain of Uncertainty / State of Nature
1965-08-11
The four men who opened up a new field of physics: Max Born, Paul Dirac, Werner Heisenberg and George Thompson meet and discuss topic with John Charap at the annual science conference in Lindau, Germany.
E16
Time Stood Still / Weighty Matters
1965-08-25
Professor Harold Edgerton of the Massachusetts Institute of Technology, who has won international recognition for his achievements in ultra-high-speed photography, talks about his work and shows some of the remarkable pictures, both still and moving, that he has taken.
E17
Fuel for the Future / Collector's Piece
1965-09-08
Horizon interviews Prof. Andrade about his collection of rare scientific books which he was about to sell.
E18
Let Newton Be
1965-09-22
On the 300th anniversary of Isaac Newton's greatest year of discovery, one of his most ardent disciples, Prof. Julius Summer-Miller, comes from California to illustrate the excitement of seeing Newton's principles in action.
E19
Special Senses / Toil, Sweat & Tears
1965-10-10
What sort of person can invent a 3-D microscope, a new way of photographing the moon, publish fifty papers on perception, and spend three weeks hunting for a minute sea creature to see how its eyes work? Cambridge psychologist Richard Gregory is a man of many facets. Tonight's film examines his inve...
E20
An Affair of the Heart
1965-10-24
Horizon explores heart attacks and thrombosis.

📋 All Seasons of Horizon

Season 1Season 3Season 4Season 5Season 6Season 7Season 8Season 9

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