This is such a great podcast. I have been listening to this guy on Itunes-U for a while (Dacher Keltner). If you want to find more, look for UC Berkeley evolutionary psychology on Itunes.
Here’s the description:
“Survival of the fittest, or survival of the kindest? Where does the human capacity for goodness come from? And are human emotions social constructions, or are they wired into our nervous systems? In Born to Be Good, Dacher Keltner writes about the nature and evolutionary origins of kindness, compassion, awe, and other emotions. He also highlights Darwin’s emphasis on human sympathy.”

