America Before: The Key to Earth's Lost Civilization

Until very recently there was almost universal agreement amongst scientists that human beings first entered the Americas from Siberia around 13,000 years ago by walking into Alaska across the Bering landbridge. Over the next two thousand years their descendants supposedly spread out through Central and South America reaching the southern tip of Chile by about 11,000 years ago. Meanwhile the Ice Age ended, sea level rose, the Bering landbridge was submerged and the A... >Voir plus