Scientists analyzed about 75,000 pollen grains and confirmed that the oldest footprints found fossilized in New Mexico were actually up to 23,000 years old. Read more here.
Footprints at White Sands National Park in New Mexico confirm human presence over at least two millennia, with the oldest tracks dating back 23,000 years. Footprints found at White Sands National Park in New Mexico provide the earliest.
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