“It’s really important to remember our history,” Obama continued. “Unless you were one of the first Americans, a Native American, you came from someplace else, somebody brought you,” he said.
Obama: Unless you were a Native American, you came from someplace else | WashingtonExaminer.com
“Native Americans” arrived in the US during the last ice age. Sea level was 100 metres lower and they walked across the Bering Strait from Siberia. Tina Fey watched them do this from her house.
An exhaustive study of DNA taken from dozens of Native American groups that span from Canada to the tip of South America is helping to settle a question that has long divided scientists: When people arrived in the Americas more than 15,000 years ago, the Harvard-led research shows, they came in successive waves, not all at once.
The analysis published Wednesday reveals that while one population of “First Americans” crossed a land bridge from Siberia during the last Ice Age, giving rise to most Native Americans, there were at least two subsequent migrations. These people mixed with the founding group later, leaving traces of their genes in the DNA of present-day populations in Alaska, Greenland, and Canada.
h/t to Dave G