Horizon Season 31 Episode release dates & where to watch

1. Small Arms, Soft Targets

Horizon brings you the international campaign to frame the laws of war by limiting the design and use of weapons aimed at "soft targets".

2. The Last Mammoth

This Horizon documentary explores theories about the reasons for the extinction of mammoths including those which survived on the Island of Wrangel.

3. The Man Who Made Up His Mind

This is a Horizon episode that attempts to answer the question, "What is a mind?" and how does your brain create it? Gerald Edelman thinks he has the answer.

4. Genie

Horizon brings you the story about a 13 year old girl who had lived most of her life tied up in the back room of her parent's house since the time she was born.

5. Death Wish - The Untold Story

In this report by Horizon, we look at a type of cancer which cured itself. The cancer cells were killing themselves and finding out why may revolutionize future cancer treatment.

6. Air Crash - The Deadly Puzzle

Horizon reports on a team investigating the mysterious disappearance of an airliner in 1992 that was flying over the Panamanian jungle.

7. Hunt for the Doomsday Asteroid

In this documentary, Horizon tries to answer the question if "Star Wars" technology could be used to destroy meteors big enough to threaten life on earth.

8. Hubble Vision

This Horizon episode follows the rescue and repair mission carried out by the shuttle astronauts on the Hubble Space Telescope.

9. Some Like iit Hot

Horizon explores scientific discoveries made in extraordinary ways.

10. Too Close to the Sun

Horizon examines the continuing, bitter controversy over the claim that nuclear fusion has been produced in a test tube.

11. Sir Walter's Journey

In this episode, Horizon presents Professor Sir Walter Bodmer who searches for a new history of Britain, one that is written in their genes.

12. After the Flood

This episode of Horizon investigates the flooding of the Mississippi river in the USA and a massive flood in Bangladesh.

13. Against The Clock

Horizon explores how the demands of a 24-hour culture pushes people too far and the many accidents caused by fatigue.

14. The Blueprints of Genocide

This Horizon documentary investigates newly discovered documents in Moscow from 1945 about German concentration camps.

15. Ulcer Wars

Horizon reports on a new discovery where stomach ulcers caused by Bacterium Helicobacter Pylori are treatable with antibiotics.

16. Deaf Whale, Dead Whale

Horizon investigates how mankind is now polluting the world's oceans with extreme noise caused by many sources such explosions and super tankers.

17. Whispers of Creation

Horizon explores the creative process that caused ripples in the universe after the "Big Bang". Three teams of scientists attempt practical experiments to test abstract theories of cosmology.

18. The Predator

Horizon presents a documentary on the Partula, a Polynesian tree snail.

19. Close Encounters

Horizon investigates some alleged reports of alien abductions.

20. Orange Sherbet Kisses

Horizon presents a documentary on Synaesthesia which is an unusual disorder of perception in which barriers between the senses dissolve.

21. Designer Wines Finale

Horizon brings you Reports from Europe, America, and Australia on how wine making differs and asks whether the traditional and troubled European wine industry will have to change its methods to compete with those wines from the new world.