In geologic history, extinctions have occurred after high levels of atmospheric CO2, when oceans are stratified and archae were well fed and proliferated, producing hydrogen sulfide, a poison often called "swamp gas." Here Franz Oeste, Brian von Herzen and Paul Beckwith discuss the possibility that current conditions on earth are leading to such an extinction. They are not much worried, believing that the proliferation of phytoplankton will help cool the planet, and it is the heat that causes ocean stratification, which is the condition necessary for these other dire conditions to arise. For the video, audio podcast, transcript, and comments: https://tosavetheworld.ca/episode-539-is-swamp-gas-in-our-future