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October 6, 2006
No land bridge needed
Traditionally, the first Americans were thought to be big game hunters, who marched from Siberia across the land bridge to Alaska. Then, they were thought to have travelled south through the Canadian Arctic via an "ice-free corridor" that emerged in the central US.
But the earliest signs of human occupation from the ice-free corridor date to 11,000 years ago, while California's Channel Islands are now known to have been inhabited at least 13,000 years ago.
Professor Erlandson has come up with an alternative theory that maritime peoples from Asia followed forests of kelp to the New World.
BBC NEWS | Science/Nature | Early humans followed the coast
Posted by thdyck on October 6, 2006
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