via The Scientist RSS https://ift.tt/3zMIG6J Researchers excavated human footprints out of a small bluff next to a dried-up playa lake and radiocarbon-dated embedded seeds to around 23,000 years ago. Their results suggest that people entered the Americas thousands of years earlier than the accepted estimate. https://ift.tt/eA8V8J September 24, 2021 at 12:19AM