More at http://philosophytalk.org/shows/morality-godless-world.

Belief in God is thought by many to be the only possible source of morality, such that without a God, “everything is permitted.” Yet godlessness is on the rise in the West, with figures like Richard Dawkins, Sam Harris, and Lawrence Krauss leading the “New Atheism” movement. But if atheism is defined by its lack of belief, where do these non-believers find their guiding moral principles? Are there any positive beliefs or values that atheists have in common? If so, are they based on a rational, scientific framework, or must non-believers, like believers, ultimately rely on faith? John and Ken welcome John Figdor, a Humanist chaplain at Stanford University and co-author of "Atheist Mind, Humanist Heart: Rewriting the Ten Commandments for the Twenty-First Century."