Hear Neal Conan's complete follow-up conversation about the teen brain with B.J. Casey, director of the Sackler Institute at Weill Cornell Medical College, on NPR's news blog, The Two-Way.
Host Neal Conan reads a response to a segment about tension among Christian evangelicals over the science of human origins. And, having heard from so many parents after a conversation on the teen brain, Conan follows up with guest B.J. Casey for some additional insight into the teen mind.