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08-10-2016, 06:30 PM
Two groups of experts generally agree when a gateway from Siberia to North America opened, but not on who used it first.
More... (http://www.nytimes.com/2016/08/11/science/how-did-people-migrate-to-the-americas-bison-dna-helps-chart-the-way.html?partner=rss&emc=rss)
More... (http://www.nytimes.com/2016/08/11/science/how-did-people-migrate-to-the-americas-bison-dna-helps-chart-the-way.html?partner=rss&emc=rss)