Robert Sapolsky on how everything from hormones to our culture influences our choices. Playwright Lucas Hnath on his new play, “A Doll’s House, Part 2,” along with Emmy winner and Tony Award nominee Laurie Metcalf, who stars in it as Nora Helmer. Ibsen's 1879 play ends with Nora leaving her husband and children to start a new life. In “A Doll’s House, Part 2,” Nora returns after several years to a find family still dealing with the fallout from her departure. Palestinian American writer and clinical psychologist Hala Alyan joins us to discuss her debut novel, Salt Houses. It tells the stories of four generations of a Palestinian family who are repeatedly displaced because of war and violence. The Economist's Adam Roberts on how India may establish itself as an economic powerhouse, and why many of its citizens are optimistic about the country's prospects.