November 30, 2004
Pleistocene Knock-Outs

Scientific American is carrying this article detailing new developments in the causes of the great megafauna extinctions of the late pleistocene. By using DNA studies of ancient bison fossils scientists have found indications of decreasing diversity starting as early as 37,000 years ago. This is a much earlier than the arrival of large numbers of humans in the same environment, which would seem to put a dent in the "we killed them all" hypothesis.

Posted by scott at November 30, 2004 03:21 PM

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