Summary: Our first guest is an unlikely "fractivist"...Lou Allstadt is a longtime former Executive Vice President of Mobil Oil and he sharesthe roots of his post-career activism and what led him to write an angry open letter to Exxon head Rex Tillerson. Next noted environmental writer for the New Yorker and author of three books joins us to discuss her latest work..."The Sixth Extinction, An Unnatural History". Elizabeth Kolbert discusses what humans are doing, knowingly or otherwise, to doom life on our blue planet.
