New research provides evidence that humans were in America 23,000 years ago, 7,000 years earlier than previously thought. Fossil footprints found in New Mexico support the early dates, adding to the record of human presence on the continent. Pollen grains and advanced techniques, such as radiocarbon dating and optically stimulated luminescence, were used to confirm the dates. #science #news

https://phys.org/news/2023-10-humans-america-years-earlier-thought.html