Ancient DNA Challenges 'Clovis First' Theory with Surprising New Timeline

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Researchers examining ancient DNA have narrowed down the timeline of early human migration into North America — shedding light on a question that’s puzzled scientists for decades.

The study, published online ahead of its appearance in the December 2026 issue of the journal Current Opinion in Genetics & Development, looked at previously published genetic and archaeological evidence to better understand when humans first arrived in the Americas.