20,000-year-old footprints show humans have been in the Americas longer than previously thought, scientists say

20,000-year-old footprints show humans have been in the Americas longer than previously thought, scientists say

Footprints found in White Sands National Park may show that humans were in what is now New Mexico over 20,000 years ago.National Park Service <ul> <li>In 2021, researchers dated ancient human footpr… [+3267 chars]

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