The First Human Migrations to the Americas

第 1 季，第 2 集: DNA evidence points to Asia, and only Asia, as the origin of all human migration to North America. While there were many migration episodes, each episode involved passage across the Bering Strait. Sites of ancient habitation have been found all across the continent, under water and on dry land. See why, even with current technologies, scientists cannot yet agree on the ages of these sites.