We're replaying some of our favorite interviews on today's show. Annie Murphy Paul explains the new field of fetal origins—which looks into how much we’re influenced by the conditions we encountered in utero. Then, James “Tappy” Wright talks about being a roadie and tour manager for some of the world's biggest music stars. Also, we'll talk about three boxes of recently discovered Spanish Civil War photos from Robert Capa and others, on view at ICP. Plus, Pulitzer Prize–winner Isabel Wilkerson chronicles the Great Migration, one of the great untold stories of American history.