Footprints in the sand often only last as long as the next big wave or high tide. But footprints found in New Mexico’s White Sands National Park have lasted a lot longer than that.In fact, scientists believe they’ve been there for more than 20,000 years. And the find could change the way we understand how and when humans first got to the Americas.Vance Holliday is a professor
23,000-year-old human footprints are oldest in the Americas
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Ancient Footprints Suggest Humans Lived In The Americas Earlier Than Once Thought
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Huellas indican que los humanos están en América desde hace 23 000 años - Ciencia - Vida
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