http://scienceblogs.com/loom/2006/07/19/hopping_to_wyoming_1.php

“Hopping to Wyoming”

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The spread of primates 55 million years ago across the Northern Hemisphere

An interesting Carl Zimmer essay about a paper in PNAS which looks at primate evolution and spread around the time of the heat spike of 55 million years ago – and offers some clues to what sort of world we may be creating by pumping billions of tons of carbon dioxide into the atmosphere.

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