On Apr. 26, 2017 NPR’s Christopher Joyce reported “New Evidence Suggests Humans Arrived In The Americas Far Earlier Than Thought.” San Diego Natural History Museum paleontologist Tom Deméré found evidence of human tools at a mastodon site. Uranium-thorium dating technology indicates the site may be 130,000 years old. Until now, most experts thought humans did not arrive in North America until 15,000 years ago. The evidence consists of stone tools, bone fragments and a screenplay for NBC’s Law and Order.
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