Did a Significant Cool Spell Mark the Demise of Megafauna?

The end of the Pleistocene Epoch was marked with steadily warmer temperatures and the great ice age glaciers that covered vast areas of North America were in retreat.

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<p><a href="http://www.physorg.com/news128183102.html">Did a Significant Cool Spell Mark the Demise of Megafauna?</a></p> <p>The end of the Pleistocene Epoch was marked with steadily warmer temperatures and the great ice age glaciers that covered vast areas of North America were in retreat. </p>