Bering Strait Appeared Earlier than BelievedBreaking News
This would have closed off human migration by foot across the bridge 1,000 years earlier, too, the researchers said.
A team at the Woods Hole Oceanographic Institution in Massachusetts, the Scripps Institution of Oceanography in San Diego and the University of Massachusetts found places on the ocean floor where sediment deposits were deep enough to act as a kind of geologic clock.
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