In 2021, scientists radiocarbon-dated pollen found in human footprints at the White Sands National Park in New Mexico and came back with dates of greater than 20,000 years. Critics demanded more evidence, and in 2023, using new data and more advanced methods seems to have confirmed the date. Though there are still skeptics, the White Sands discovery is not the only site that dates to the Last Glacial Maximum between 20-26,000 years ago.
