David Suzuki is an internationally renowned geneticist and environmentalist and a recipient of UNESCO’s Kalinga Prize for the Popularization of Science and the 2009 Right Livelihood Award. Host of the long-running CBC television program The Nature of Things, he is also the author of more than 50 books. He lives in Vancouver.
Bill McKibben is the author of a dozen books about the environment and a founder of the grassroots climate campaign 350.org. Time called him the planet's best green journalist” and the Boston Globe said in 2010 that he was probably the country's most important environmentalist. His most recent book is Oil and Honey: The Education of An Unlikely Activist. He lives in Ripton, VT.