Who Came First? New Clues to Prehistoric Americans

All of the people who came to the Americas many thousands of years ago walked across the Bering Land Bridge between Siberia and Alaska. Right? Wrong! Some early Americans did come that way, but tantalizing evidence shows that many did not. How do you explain a settlement 14,800 years old near the southern coast of Chile when glaciers still covered most of Canada and made land travel virtually impossible? Or that the oldes human skull found in the Americas is that of a woman who lived in southern Brazil? Or that the oldest human settlement in North America is located near Pittsburgh, Pennsylvania, not in the West as one would have expected? New evidence is pouring in, as archaeologists dig further and combine their work with that of linguists, geneticists, climatologists, and scientists in other related disciplines.