Linguistic study suggests Ice Age groups migrated back to Central Asia from Bering land bridge.
The New World was the last habitable part of the globe to be settled by humans. Today, Alaska is separated from eastern Siberia by the Bering Strait, which is 55 km (18 miles) wide, but this has not always been the case. Throughout the period from 25,000 years ago until as late as 10,000 years ago, sea levels were so low that the strait and parts of the adjoining Chukchi and Bering Seas became dry land. The result was a landmass stretching from the Verkhoyansk Range in eastern Siberia to the Mackenzie River in northwestern Canada (Hoffecker, et al., 1993).