Why Do We Cry?
THE SCIENCE OF TEARS<p>Neurologist Michael Trimble, the author of the new book <i><a href="http://www.amazon.com/Why-Humans-Like-Cry-Evolutionary/dp/0199693188/" target="_blank">Why Humans Like to Cry: Tragedy, Evolution, and the Brain</a></i>, surveys the many theories of why we shed tears and what we get out of it—especially when we cry in sympathy or after we read a good book.</p>