The timing of the earliest unequivocal human dispersals into Alaska over the Bering Land Bridge corresponds with a shift to warmer and wetter conditions in the region between ~14,700 and ~13,500 years ago. Researchers reconstructed the terrestrial climate from the last glacial maximum, about 21,500 years ago, to the present from the Bering Land Bridge’s south–central margin. The environmental changes may have spurred humans’ eastward dispersal from western or central Beringia after a long period of little human movement in the region.
Royal Society Open Science
Published June 20, 2018 (Brief from Royal Society)

URL after publication
Canadian co-authors: Les Cwynar, University of New Brunswick – cwynar@unb.ca; Josh Kurek, Mount Allison University – jkurek@mta.ca; Andrew Medeiros, York University – andrewmedeiros@trentu.ca