Tony Dokoupil sits down for a one-on-one with the Executive Secretary of the UN Framework Convention On Climate Change, Christiana Figueres. Later, he talks to author Gary Rivlin about his latest book ‘Katrina: After The Flood’ and Sharon Lerner about her investigation into the chemical C8, better known as Teflon. Plus, Dokoupil and Neela Banerjee from InsideClimate News discuss how Exxon knew CO2 emissions were damaging the planet back in the 1970s. Climate activist Tim DeChristopher stops by to talk about his new website, ‘Climate Disobedience Center.’Oct. 1, 2015