Science
Ancient DNA evidence narrows down when people first reached Americas
The exact timeline of when the first humans arrived in the Americas remains a subject of intense scientific debate. Researchers continue to analyze genetic, archaeological, and environmental data to determine if migration occurred before, during, or after the Last Glacial Maximum. Recent analyses of ancient DNA are beginning to offer fresh clues, shedding light on this enduring historical mystery and helping scientists better understand the peopling of the New World.