The proposed age of these remarkable footprints was announced in 2021 by U.S. Geological Survey research geologists, but the finding was so extraordinary that it demanded additional testing.
A new study coauthored by a UC Berkeley professor provides "seemingly incontrovertible proof" that humans arrived in the Americas thousands of years earlier than scientists have long thought.
Tests confirm humans tramped around North America more than 20,000 years ago berkeley.edu - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from berkeley.edu Daily Mail and Mail on Sunday newspapers.