Did fist fighting change the course of human evolution?

The human hand is a beautiful product of evolution. Each one a finely crafted arrangement of 27 bones, our hands are among the most dexterous in the animal kingdom, and are every bit as capable of threading a needle as they are grasping the oar of a canoe. But newly published findings suggest our palms and fingers may… »12/20/12 4:20pm12/20/12 4:20pm