Added: 13 years ago.
How did Stone Age people reach North and South America? Dr Alice Roberts discovers evidence for an ancient corridor through the Canadian ice sheet that may have allowed those first people through. But some very ancient finds in southern Chile seem to suggest a very different way into the Americas; an ancient human skull discovered in Brazil even points to an Australasian origin of the Americans. Could a route from Australia across the Pacific have been possible?
The Incredible Human Journey
Dr Alice Roberts travels the globe to discover the incredible story of how humans left Africa to colonize the world.
How did we get here? Following a trail of clues from the latest scientific research, Dr Alice Roberts re-traces the greatest ever journey taken by our ancestors. Thousands of years ago one small group of our species, Homo sapiens, crossed out of Africa and into the unknown. Their descendants faced baking deserts, sweat-soaked jungles and frozen wildernesses and risked everything on the vast empty ocean.
Within 60,000 years they colonised the whole world... How did they do it? Why do we, their descendants all look so different? And what did we have that meant we were the only human species to survive?
Using the evidence from genetics, fossils, archaeology and climatology, Dr Alice Roberts uncovers five epic routes our ancestors took across the globe and the obstacles and brutal challenges they encountered along the way. It reveals how our family tree grew and spread out across the world, producing all the variety we see in the human species today – but despite all that diversity, Alice reveals how astonishingly closely related we all are.