America's first settlers were trapped in Beringia for 10,000 years

The ancestors of Native Americans came to the New World by walking over a land bridge across the Bering Strait. But there's a rather glaring 10,000 year gap in the story — one that could be explained by a migratory pause that lasted for millennia. » 2/28/14 8:00am 2/28/14 8:00am

The Bering Land Bridge nearly wrecked the Earth's climate

The land bridge that once connected North America and Asia rose from the seas 80,000 years ago. And at the same time, North America's climate began experiencing violent climate swings, with average temperatures shifting as much as ten degrees every decade. » 4/09/12 4:40pm 4/09/12 4:40pm