Terry Gross

Robot soldiers are no longer just the stuff of sci-fi fantasy. As technological warfare expert P.W. Singer explains in his new book, Wired For War, some military tasks previously assigned to humans are now being handled by machines.

Rivers Cuomo, the lead singer, guitarist, and songwriter of the rock band Weezer, has released a solo set of at-home demos called Alone and Alone II.

Eric Foner, author of Our Lincoln, talks about the era following the Civil War in which former slaves were promised equal rights and citizenship. Foner is DeWitt Clinton Professor of History at Columbia University.