In this August 2013 photo provided by the University of Alaska, excavators work at the Upward Sun River discovery site in Alaska. According to a report released on Wednesday, Jan. 3, 2018, DNA from an infant who died in Alaska some 11,500 years ago, found at this site, is giving scientists the best look yet at the genetics of the ancestors of today’s native peoples of the Americas. (Ben Potter/University of Alaska via AP)
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