A team of scientists in Chile say they've found a human footprint that dates back more than 15,000 years -- the oldest one ever found in the Americas
The discovery challenges the previous timeline and map of human migration into South America. Most available evidence held that humans did not reach the Patagonia region at the southern tip of South America until 12,000 years ago, Karen Moreno, one of the co-authors of the research, told CNN.
Scientists were alerted to the richness of the area after construction workers, digging to build houses, began unearthing treasures hidden below the surface. But more than eight years passed between spotting the footprint and publishing the confirmation of its age. Moreno said the team spent that time"trying to convince our colleagues that it was a footprint."Moreno said there were"a lot of difficulties" in convincing colleagues how it's possible for humans to have been in the area 3,000 years earlier than previous traces of the nomadic Clovis culture that existed in the area.Human footprints as old as 3.
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