Listen to the argument that evolution speaks to being the most "intelligent design." [11:35]

Sal Khan clarifies some points on evolution and intelligent design. [9:01]

Bill Nye stops by to chat about teaching science, launching solar sails into space, and his debate against a famous creationist.

In this segment, guest host Joe Palca talks with biology professor and textbook author Kenneth Miller about the fight to keep creationism out of public school science class.

We'll talk about 'Creation,' a biographical film about Charles Darwin, recently released in the US.