Human footprints in U.S. date back 21,000 to 23,000 years: s

It was previously believed humans existed in North America somewhere between 13,500 and 16,000 years ago, but these footprints are much older.

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United States , America , Jeff Pigati , White Sands , Kathleen Springer , National Park Service , North America , Last Glacial Maximum , National Park , Fossilized Footprints , Radiocarbon Dating , White Sands National Park , Us Geological Survey , Footprints ,