Caroline Alexander is a contributing writer for National Geographic Magazine; she wrote the National Geographic February 2015 cover story, The Invisible War on the Brain. She is the author of the best-selling books The Endurance: Shackleton’s Legendary Antarctic Expedition and The Bounty. She has written a number of documentary films; most recently Tiger Tiger. Her new translation of Homer’s Iliad will be published this year by Ecco Press. Her piece on