In 2000, the discovery of a tiny fossilized jawbone hit the headlines. The jawbone, only a few centimeters long with seven rows of teeth, was found abandoned in a dusty museum where it had lain unnoticed for decades. Its rediscovery has caused a sensation in the world of paleontology because scientists now believe it may be a tiny remnant of a 'missing link', an ancient extinct animal that could provide a vital clue in our understanding of one of the great mysteries of science - how, 360 million years ago, a slimy fish-like creature grew legs and walked out of the water, onto the land to become our ancestor. This mystery has taken scientists a century to unravel. And this tiny jawbone may be a final clue. According to the theory of evolution all four-limbed animals, everything from human beings to dinosaurs, are descended from one creature, the first of its kind to crawl on the Earth. Long ago, this almost mythical beast must have evolved from a fish with fins, must have developed legs and made the great evolutionary move from water to land. How and why this huge evolutionary change should have happened was the source of fierce speculation and it was always believed that one day scientists would find the fossil evidence that would explain everything.

Episode Viewers and Ratings

Season 37 Episode 4 of Horizon resulted in a 0.00 rating in the 18-49 demographic.

Horizon Season 37 Episodes...

• s37e01 - Life on Mars
• s37e02 - Destination Mars
• s37e03 - The Mystery of the Miami Circle
• s37e04 - The Missing Link
• s37e05 - Killer Algae
• s37e06 - Ecstasy and Agony
• s37e07 - Snowball Earth
• s37e08 - Taming the Problem Child
• s37e09 - What Sank the Kursk?
• s37e10 - The Mystery of the Persian Mummy
• s37e11 - The Ape That Took Over the World
• s37e12 - Life Blood
• s37e13 - The Death Star
• s37e14 - Cloning the First Human

Horizon Show Summary

Horizon is BBC Two's flagship 50-minute science documentary series.

Recognised as the world leader in its field, it regularly wins a sweep of international science, medical and environmental film accolades, and has recently won the Royal Television Society Award and the Prix Italia.

In 2002, the British Academy of Film & Television Arts presented Horizon with the BAFTA Television Award for Best Factual Series or Strand.

In 2003 it won the prestigious Images et Science award for best medical documentary and the Carl von Linne Award at the Living Europe film festival in Sweden. That year, a Horizon co-production with WGBH Boston won the Emmy for best documentary.

In September 2014 it celebrated its 50th anniversary and it continues to enjoy outstanding critical acclaim.