William Jackson Harper talks about the play, “Travisville,” which he wrote. Barbara Kingsolver dissects her new novel, Unsheltered. Rebecca Pronsky presents her new production, “Hillary Clinton's Song Cycle: Witness.” Michael Palin discusses his new book Erebus: One Ship Two Epic Voyages and the Greatest Naval Mystery of All Time. Margaret Lyons and Matt Zoller Seitz join us for a panel discussion on Fall TV. Scott Fallon explains "The War on Plastic."