We talk with Chloe Benjamin about her bestselling novel, The Immortalists. (Penguin Random House.) It’s about four siblings who, in childhood, learn the dates of their death. Or do they? Then, could there be people among us whose lifespan is nearly a millennium? Matt Haig talks about his latest novel, How To Stop Time (Penguin Random House.) And finally, we talk with the great environmental philosopher and advocate Vandana Shiva. A new book of interviews with her, Creative Civil Disobedience, is out from Actes Sud.