Footprints in NM: Humans in N. America

Ancient footprints in New Mexico raise questions about when humans inhabited North America

(PBS NewsHour, April 4, 2022) When humans first populated North America and how they arrived has long been a matter of spirited debate.

A recent study detailing what archeologists believe are the oldest known footprints in the United States is sparking new questions and upending long-held beliefs. Stephanie Sy reports.

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