Sparks

On today’s show: Tony- and Pulitzer prize-winning playwright David Auburn, Tony- and Emmy Award-winning actor John Lithgow and Grace Gummer discuss the production of “The Columnist.” Director Philip Kaufman talks about his film about the passionate and tumultuous marriage between Ernest Hemmingway and Martha Gellhorn. The BBC’s A History of the World in 100 Objects takes a look at a sculpture made from decommissioned weapons from the Mozambique civil war. Plus, Thailand is the second largest supplier of foreign seafood on to the United States, and on Underreported, we’ll take a look at the use of slave labor in southeast Asian fisheries.