![]() In late 2018, two studies compared human genomes from across the Americas to infer that there were multiple waves of migration from North to South America. ![]() Carbon dating of food residue and collagen from animal bones on the floor of the rock shelter, dubbed Cuncaicha, pinned that activity to as early as 12,500 years before present (BP), more than 1,000 years before the oldest previously dated Andean archaeological sites. Rademaker struck pay dirt with his 2007 discovery: the site had clear evidence of human activity, including beads made of bone and hundreds of stone tools.
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