
Genetic Data Places Indigenous Ancestors' Arrival in Americas at 21,000 Years Ago
A new study suggests the ancestors of today's Indigenous peoples arrived in the Americas no earlier than 21,000 years ago, coinciding with the end of the Last Glacial Maximum. Researchers analyzed genetic data to evaluate three migration models, finding that while humans were definitely present by 13,500 years ago, earlier arrivals remain uncertain due to significant gaps in ancient DNA records.













