Jared Diamond, the author of Guns Germs and Steel: The Fates of Human Societies, invites Elizabeth into his Los Angeles home where he shares the books that have shaped his life. He speaks about Walden by Henry David Thoreau, If This is a Man by Primo Levi, Sherlock Holmes by Arthur Conan Doyle, and other books that reflect his adventures in New Guinea. They also discuss his latest book, Upheaval: Turning Points for Nations in Crisis and why he remains optimistic for the future.