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Horizon

Horizon

1964Returning Series61 Seasons1173 Episodes7.4TMDB
BBC Two

Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.

Season 15 Episodes

Browse every episode and jump into details.

Episode 1: Living Machines

Jan 6, 1978 · 1h

Horizon investigates how biologists and engineers are pooling their ideas to understand how nature's machines work.

Episode 4: Zero G

Feb 3, 1978 · 1h

Horizon presents a report on zero gravity and the effects of weightlessness in spacecraft on humans.

Episode 5: The Message in the Rocks

Feb 17, 1978 · 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.

Episode 7: Light of the 21st Century

Mar 10, 1978 · 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.

Episode 8: The New Breadline

Mar 24, 1978 · 1h

Horizon investigates the reasons for poverty in Britain today, now with seven million on at the poverty line.

Episode 9: Now the Chips Are Down

Mar 31, 1978 · 1h

About the applications and implications for the future, particularly the effects on the labour market, of microprocessors.

Episode 10: Explosions in the Mind

Jul 14, 1978 · 1h

In this episode, Horizon explores the after effects of a stroke when there is a sudden stoppage of blood to the human brain.

Episode 11: One Small Step

Jul 21, 1978 · 1h

Horizon investigates the race to the moon between the USA and Russia and questions the motives behind the space race.

Episode 12: The Tsetse Trap

Jul 28, 1978 · 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.

Episode 14: Prisoners of Hope

Aug 11, 1978 · 1h

In this episode, Horizon explains some of the research in multiple sclerosis and how the lives of MS sufferers are affected.

Episode 18: Bags of Life

Sep 8, 1978 · 1h

Horizon investigates the composition and structure of the membrane that surround individual cells.

Episode 19: Innocent Slaughter?

Sep 15, 1978 · 1h

In this documentary, Horizon examines all sides of the Canadian Harpseal hunt issue and asks if it is really necessary.

Episode 22: The Big Sleep

Nov 17, 1978 · 1h

In this story, Horizon takes a look at the world's leading hibernation research projects.

Episode 24: The Red Deer of Rhum

Dec 29, 1978 · 1h

Horizon takes a look at the changing behaviour of individual animals in a herd of red deer on the Isle of Rhum.

Season 15 FAQ

Quick answers about this season's release timeline and episode lineup.

When did Horizon Season 15 premiere?

Horizon Season 15 premiered on January 6, 1978.

How many episodes are in Horizon Season 15?

Horizon Season 15 has 24 episodes.

What is the first episode of Horizon Season 15?

The season opens with Season 15 Episode 1, "Living Machines". It aired on January 6, 1978.

Go to Season 15 Episode 1

Where to Watch

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