For decades, we thought the first humans to arrive in the Americas came across the Bering Land Bridge 13,000 years ago. New evidence is changing that picture.
Fossil footprints in New Mexico suggest humans have been here longer than we thought kvpr.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from kvpr.org Daily Mail and Mail on Sunday newspapers.
Hidden within the seemingly barren expanse of White Sands National Park in New Mexico are human footprints. But these impressions are much more than random tracks: They are ancient vignettes cast in gypsum-rich sand. The footprints tell stories of hunters stalking a giant sloth; a traveler slipping in mud with a child on one hip; children jumping in puddles, splashing in play; and more. But one question has plagued researchers studying these prints. Exactly how long ago were they made? A paper p