Season 37 Episodes:

Episode 2 Conjoined Twins

2. Conjoined Twins

Aired: Jan 20, 2000

On a barren desert in South America lies one of the greatest archaeological p...

Episode 7 Extreme Dinosaurs

7. Extreme Dinosaurs

Aired: Mar 9, 2000

Some people see GM food as a ground-breaking scientific idea that could help ...

Episode 10 Atlantis Reborn Again

10. Atlantis Reborn Again

Aired: Oct 12, 2000

Scattered across the world’s oceans are a handful of rare geological time-bom...

Episode 11 Life on Mars

11. Life on Mars

Aired: Oct 19, 2000

Conjoined twins are among the rarest of human beings. There are probably fewe...

Episode 12 Destination Mars

12. Destination Mars

Aired: Oct 26, 2000

It sometimes seems as if our planet has no secrets left - but deep beneath th...

Episode 14 The Missing Link

14. The Missing Link

Aired: Nov 9, 2000

In the summer of 2000, one of the great frontier cities of the Roman Empire, ...

Episode 15 Killer Algae

15. Killer Algae

Aired: Nov 16, 2000

No one quite knows what happened in the tropical aquarium of a German zoo two...

Episode 16 Ecstasy and Agony

16. Ecstasy and Agony

Aired: Nov 23, 2000

Amazing new discoveries in South America are revolutionising what we thought ...

Episode 17 Snowball Earth

17. Snowball Earth

Aired: Nov 30, 2000

A controversial theory posits that for millions of years Earth was entirely i...

Episode 19 What Sank the Kursk?

19. What Sank the Kursk?

Aired: Dec 14, 2000

Many theories about Russia's unsinkable Kursk submarine sinking in August 200...

Info about Horizon

Current Status: Returning Series

Network: BBC Two

Production Country: United Kingdom

Genres: Documentary