Humans inhabited New World's doorstep for 20,000 years

The human journey from Asia to the New World was interrupted by a 20,000-year layover in Beringia, a once-habitable region that today lies submerged under the icy waters of the Bering Strait.

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<p><a href="http://www.physorg.com/news122101269.html">Humans inhabited New World's doorstep for 20,000 years</a></p> <p>The human journey from Asia to the New World was interrupted by a 20,000-year layover in Beringia, a once-habitable region that today lies submerged under the icy waters of the Bering Strait.</p>