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Published on Jun 18, 2013
Courtesy: http://www.fistchat.com Hosted and Produced by Stephan Kern & Ben Warner. Animals, and the study of them, have made huge contributions to science, medicine and the understanding of our own biological processes. Steve and Ben discuss some of these contributions through four news stories, including how an alligator's smile holds clues to new teeth, scavenger cells help limbs to regrow, why penguins lost their wings and how the oldest ape sheds light on human evolution.