Description: 200,000 years ago we took our first steps in Africa. Today there are 7 billion of us living across the planet. How did our ancestors spread from continent to continent? What was the secret to their success? This is a global detective story, featuring the latest archaeological discoveries and genetic research. On each continent, we track down the earliest members of our species, Homo sapiens. Who were these First Peoples? What drove them to the ends of the earth?