The 11,500-year-old remains of a 6 week old child found in Alaska have revealed new information on the ancestors of all Native Americans. It is believed that she is from a previously unknown genetic group who crossed the Bering Sea from Russia via a land bridge that later disappeared.
Scientists believe that evidence in her DNA shows that a single wave of migrants moved into the continent from Siberia just over 20,000 years ago. Since I have Mohawk ancestry this story is extremely fascinating to me.
Read more at Alaskan infant's DNA tells story of 'first Americans'