This date dramatically pushed back the timeline of humans’ history in the Americas, the last landmass to be settled by prehistoric people. National Park ServiceHowever, some archaeologists questioned the age of the footprints established by those initial findings. Human footprints infilled with white gypsum sand at White Sands National Park. A trench at the study site with David Bustos, White Sands National Park's resource program manager, in the foreground. Nor, despite advances in genetic evidence, is it clear whether one or many populations of early modern humans made the long journey.

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Persons: ”, Kathleen Springer, “, David Bustos, Jeff Pigati, there’s, Bente, Jennifer Raff Organizations: CNN, Service, Science, Sands, Park Service, Geological Survey, White Sands, Norwegian University of Science, Technology, North, University of Kansas Locations: what’s, New Mexico, Americas, Tularosa, White Sands, North America, Asia, New York City, Cincinnati, Des Moines , Iowa, Alaska