In ancient boulders, new clues about the story of human migration to the Americas

In ancient boulders, new clues about the story of human migration to the Americas

In ancient boulders, new clues about the story of human migration to the Americas,

A geological study provides compelling evidence to support the hypothesis that ancient humans migrated into the Americas via a coastal route. By analyzing boulders and bedrock, a team shows that part of a coastal migration route became accessible to humans 17,000 years ago. During this period, ancient glaciers receded, exposing islands of southern Alaska’s Alexander Archipelago to air and sun — and, possibly, to human migration.

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