Tests of footprints in New Mexico confirm earlier human arrival in North America than believed
Tests of footprints in New Mexico confirm earlier human arrival in North America than believed
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New tests confirm antiquity of ancient human footprints in New Mexico
Humans trod the landscape of North America thousands of years earlier than previously thought, according to new research that confirms the antiquity of fossilized footprints at White Sands National Park in New Mexico using two further dating approaches.