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During the height of the last Ice Age, generations of children and teens walked barefoot along a muddy lake in what is now New Mexico, encountering mammoths, giant land sloths and a canine species. extinct known as the terrible wolves.
Today, some 23,000 years later, the fossilized footprints of young people provide new information about when humans first populated the Americas. Unearthed in White Sands National Park by a research team that began work in 2016, the tracks are about 10,000 years older and about 1,600 miles further south than any other known human footprint in America, reported Thursday scientists in the journal Science.
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