Frans de Waal: "The Age of Empathy" (Harmony Books)
Greed is out, empathy is in, says an internationally renowned zoologist. His studies of primates are changing the scientific community's understanding of human nature and offer lessons for a kinder society.
[Frans de Waal answered some listener questions we couldn't get to on the air.](http://wamu.org/programs/dr/extra/frans_de_waal/)
psychology professor at Emory University; author of "Chimpanzee Politics" and "Our Inner Ape;" director of the Living Links Center at the Yerkes National Primate Research Center