History - Ancient Voices: Tracking The First Americans

Who were the first Americans? Theories abound on the answer to that question. This BBC documentary follows a new quest for the first humans to have a foothold in the Western hemisphere. The discovery of an ancient skull sets scientific experts off on a search, shattering some longstanding and deeply held beliefs along the way. The labyrinthine path leads deep into remote jungle sites in Brazil and to the arid outback in Australia.