Episode 1
Living Machines
1h
Horizon investigates how biologists and engineers are pooling their ideas to understand how nature's machines work.
Where to watch Horizon
TV series
Horizon
1964TV-PG62 seasons7.4 / 10
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Availability
Not streaming in United States
Checked Jul 22, 2026
Horizon premiered February 4, 1964. We don't have a confirmed streaming, rental or purchase option yet.
Synopsis
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 15 episodes
Choose an episode, then use the watch options above for the show.
Episode 2
A Land for All Reasons
1h
In this episode, Horizon examines the need for an objective approach to land management in Britain.
Where to watch HorizonEpisode 3
I Don't Want to Be a Burden
1h
Horizon explores community and residential services available to the elderly in South Hampton, England.
Where to watch HorizonEpisode 4
Zero G
1h
Horizon presents a report on zero gravity and the effects of weightlessness in spacecraft on humans.
Where to watch HorizonEpisode 5
The Message in the Rocks
1h
Develops the theory that four and a half thousand million years ago the earth was formed thanks to the explosion of a huge star which provided the rocks, the minerals and the radioactivity from which life developed. These theories are based partly on analysis of a meteorite which dropped near a village in Mexico at the beginning of the seventies.
Where to watch HorizonEpisode 6
The Eddystone Lights
1h
Horizon reports on last three attempts to build a lighthouse on the Eddystone Rocks, near Plymouth.
Where to watch HorizonEpisode 7
Light of the 21st Century
1h
Horizon presents a documentary on the development of the Light Amplification by Stimulated Emission of Radiation device, or more commonly know as the Laser.
Where to watch HorizonEpisode 8
The New Breadline
1h
Horizon investigates the reasons for poverty in Britain today, now with seven million on at the poverty line.
Where to watch HorizonEpisode 9
Now the Chips Are Down
1h
About the applications and implications for the future, particularly the effects on the labour market, of microprocessors.
Where to watch HorizonEpisode 10
Explosions in the Mind
1h
In this episode, Horizon explores the after effects of a stroke when there is a sudden stoppage of blood to the human brain.
Where to watch HorizonEpisode 11
One Small Step
1h
Horizon investigates the race to the moon between the USA and Russia and questions the motives behind the space race.
Where to watch HorizonEpisode 12
The Tsetse Trap
1h
This episode of Horizon is about the tsetse fly which rules most of Africa and why much of the fertile land can't in Africa can't be used because of the dangerous insect.
Where to watch HorizonEpisode 13
A Whisper From Space
1h
Horizon explores the history of evidence used to support the Big Bang Theory of the creation of the universe.
Where to watch HorizonEpisode 14
Prisoners of Hope
1h
In this episode, Horizon explains some of the research in multiple sclerosis and how the lives of MS sufferers are affected.
Where to watch HorizonEpisode 15
On a Different Track
1h
Horizon presents a brief history of the French railways and the policy behind their future direction.
Where to watch HorizonEpisode 16
Careering into Science
1h
This documentary by Horizon is about six school children taking 'O' levels exams and inter science in Britain.
Where to watch HorizonEpisode 17
Cashing in on the Ocean
1h
Horizon looks at the implications of exploiting Manganese nodules which are scattered over the seabed.
Where to watch HorizonEpisode 18
Bags of Life
1h
Horizon investigates the composition and structure of the membrane that surround individual cells.
Where to watch HorizonEpisode 19
Innocent Slaughter?
1h
In this documentary, Horizon examines all sides of the Canadian Harpseal hunt issue and asks if it is really necessary.
Where to watch HorizonEpisode 20
The Beersheva Experiment
1h
Horizon explores an experimental medical school in Israel where students are trained primarily to care for people.
Where to watch HorizonEpisode 21
Divers Do It Deeper
1h
Horizon explores the years of research that have enabled divers to go to greater and greater ocean depth.
Where to watch HorizonEpisode 22
The Big Sleep
1h
In this story, Horizon takes a look at the world's leading hibernation research projects.
Where to watch HorizonEpisode 23
The Vital Spark
1h
In this episode, Horizon examines the current developments in electrotherapy.
Where to watch HorizonEpisode 24
The Red Deer of Rhum
1hfinale
Horizon takes a look at the changing behaviour of individual animals in a herd of red deer on the Isle of Rhum.
Where to watch HorizonEpisode information updated Jul 25, 2026
Available now in United States
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Cast
Richard Branson
Nicholas SoamesBob Brier
Robert Winston
Robert GalloTrevor R. Bryce
Joshua Wurman
Bill PatersonProduction details
- Status
- Returning Series
- Series type
- Documentary
- Episodes
- 1,173
- Original language
- English
Networks & production
BBC TwoUnited Kingdom
Themes
philosophyscience