[NYT] New World Ancestors

An article in the New York Times today, which mentions the Amerind Hypothesis and some possibly relevant genetic data: “New World Ancestors Lose 12,000 Years”:http://www.nytimes.com/2003/07/25/science/25HUMA.html?ex=1374465600&en=ae50be54b8b612ed&ei=5007&partner=USERLAND.

bq. Scientists have found genetic evidence that the first human migrations to the New World from Siberia probably occurred no earlier than 18,000 years ago.