(Please note: This show first aired last November.) Our guest on this edition of ST is Gaia Vince, a British journalist and broadcaster specializing in science and the environment. She's been the editor of the journal Nature Climate Change, the news editor of Nature, and the online editor of New Scientist, and she joins us to discuss her latest book: "Adventures in the Anthropocene: A Journey to the Heart of the Planet We Made." The so-called Anthropocene -- or the Age of Man -- has brought, of course, widespread and dramatic change to the face of the earth. Indeed, while previous shifts from one geological epoch to another were caused by events beyond human control, the Anthropocene, as an era, is actually defined as the age in which humanity's century-long emission of carbon into the atmosphere has altered the planet's biology, geography, ecology, topography, and so on. As Ken Caldeira of Stanford University has noted: “[This is] a beautifully written book that raises the most profound question of our time: 'How should we live?' In the past this has been primarily a personal question, but now it has become the central question for us as a species -- and the fate of nearly every species on our planet (including our own) rests on our answer." You can learn more about this book -- and can hear a free, on-demand "stream" of our interview with Gaia Vince -- at this link.