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video
Shark DNA Helps Catch Poachers
Dr. Mahmood Shivji explains how shark DNA is used as evidence to prosecute shark...
Wed, 09/30/2009 - 13:14
video
Claws Out: Fiddler Crabs Do Battle
Male fiddler crabs each have a single super-sized claw that they use as a weapon to...
Tue, 09/03/2013 - 16:18