Silence in the Serengeti. Barren rainforests in Brazil. Some say this is the future Earth faces if we don’t reverse course. We’re losing animal species at an unprecedented rate, but are we really in the midst of a sixth mass extinction? Join Kait and guests Dr. Paul Ehrlich, President of the Stanford Center for Conservation Biology, and Mike Gunton, Creative Director of Natural History for the BBC, as they weigh the case for the sixth great mass extinction and uncover the causes.