Listen Now to Bret Stetka on How are Brain Evolved
Brain evolution is a very labyrinthian topic taking us back to the dawn of life itself and the lowly common sea 
sponge, with their crude cellular communications, through the reptilian, mammalian, and chimp brains, and on to the hominids, ending with our species spending inordinate amounts of time interacting with little rectangles of metal and glass. What a long strange trip it continues to be. Bret makes the case that by studying the history of the brain, we can begin to piece together what it truly means to be human.
Bret Stetka is an editorial director of Medscape.com, the professional division of WebMD.com. He is a former neuroscience
Author Bret Stetka researcher, a nonpracticing physician, a freelance health and science journalist, and a regular contributor to NPR and Scientific American, writingh about neuroscience, psychology and evolution.