Thursday, March 7, 2013

RDFRS: Human Evolution: Gain Came With Pain

Human Evolution: Gain Came With Pain

by Ann Gibbons posted on February 28, 2013 03:51PM GMT
Thanks to Nodhimmi for the link!

Humans are the most successful primates on the planet, but our bodies wouldn’t win many awards for good design. That was the consensus of a panel of anthropologists who described in often-painful (and sometimes personal) detail just how poor a job evolution has done sculpting the human form here Friday at the annual meeting of AAAS (which publishes ScienceNOW). Using props and examples from the fossil record, the scientists showed how the very adaptations that have made humans so successful—such as upright walking and our big, complex brains—have been the result of constant remodeling of an ancient ape body plan that was originally used for life in the trees. “This anatomy isn’t what you’d design from scratch," said anthropologist Jeremy DeSilva of Boston University. "Evolution works with duct tape and paper clips."
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