Terry Gross

Adrian Raine argues that violent behavior has biological roots just like depression or schizophrenia. This raises questions about treatment, accountability and punishment, including the death penalty.

The New York Times reporter talks about spending much of the past year with rebels in Syria. Chivers is also the author of The Gun, about how the AK-47 has defined modern warfare.

The comedian turned his life around when he started "WTF with Marc Maron" out of his garage in 2009. He has parlayed the popularity of the podcast into a new television show called Maron, based on his life, as well as a new memoir.