23,000-Year-Old Footprints Rewrite North America's Arrival Timeline
Footprints at White Sands National Park in New Mexico have been calibrated to about 23,000 years old, placing humans in North America roughly 10,000 years earlier than previously thought. Radiocarbon dating tied to pine pollen and ditch grasses, with optical luminescence supporting the age, corroborates the finding. The footprints depict activities from play to hunting, including a woman carrying a child, and researchers hope to uncover more to broaden the North American archaeological record.
