FAIRBANKS, Alaska (AP) – Genetic research into the ancient remains of two infants found near the Tanana River may have revealed how the Americas were populated.

The infants, who were buried 11,500 years ago at the Upward Sun River site, have been linked to two ancient lineages of Native Americans found throughout North and South America. The research is detailed in a paper published this week in the Proceeds of the National Academy of Sciences, The Fairbanks Daily News-Miner reports.

University of Alaska Fairbanks researcher Ben Potter, who led the dig at Upward Sun River, said the fact t...