Geology Cage Match! The Sapiezoic vs. the Anthropocene—w/ Dr. David Grinspoon, astrobiologist

Summary: Dr. David Grinspoon is the author of Earth in Human Hands: Shaping Our Planet’s Future. He is also part of the team working with NASA on a proposed mission to Venus! On this bonus episode of Reversing Climate Change, David is back on the show with Ross to discuss the basic units of the geological time scale and explain why he proposes calling this new time marked by human impact and self-awareness the Sapiezoic Eon rather than the Anthropocene Epoch.