Why humans can throw: Baseball stars earned their skilled through evolution 2 million years ago.
The 2-Million-Year-Old Evolutionary Shift That Explains Baseball Stars 
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June 27 2013 5:29 PM

The 2-Million-Year-Old Evolutionary Shift That Explains Baseball Stars 

Our primate cousins, like Chimpanzees, can only throw one-third the speed of a 12-year-old little league pitcher, despite greater overall strength.

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