
Ancient DNA Narrows First American Arrival to 21,000 Years Ago
A new genomic review suggests the ancestors of modern Indigenous Americans arrived in the Americas no earlier than 21,000 years ago, aligning with the end of the Last Glacial Maximum. While this contradicts older archaeological claims of 23,000-year-old footprints in New Mexico, researchers note that current DNA samples are limited and may not capture all early lineages.


