Mammoth bones, ‘ghost’ footprints: Did humans arrive in North America much earlier than we thought? - Global News

A scientific debate about when humans arrived in North America is heating up thanks to two recent discoveries in New Mexico and Utah.

Recent discoveries of mammoth bones and “ghost” footprints left behind by ancient peoples are adding fuel to a scientific debate over whether the first humans to reach North America may have come muc… [+5424 chars]

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