that took place roughly 250 million years ago. It was the largest extinction event scientist know about killing off 95% of ALL LIFE on the planet! The main driver was a huge flood basalt type volcanoes where Siberia is today that erupted over 10's of thousands of years raising the CO2 levels in the atmosphere so high the average global temperature rose 10c!
...I'm totally simplifying the potential causes of the warming but one thing that FLOORED ME was we humans are on track to dump as much or more CO2 into the atmosphere in just 200-300yrs (Since Industrial Revolution)than it took these flood basalt volcano 10s of thousands of years to do! That is terrifying!
...Also, the scientist say there were like "pulses" or waves of extinction that take place during this time. The Permian Extinction wasn't instant in geologic sense like the extinction that killed off the dinosaurs which seem to happen at more rapid pace. The last & final wave of extinction was a second spike in global temperature rise due to the release of huge amounts of methane that had been frozen deep in the ocean called "Methane Hydrates". But due to the warming from the increased CO2 from volcanic activity the oceans were to warm for these methane hydrates to remain frozen & stored under the ocean...Methane is 25 TIMES as powerful as CO2 at trapping heat!
...I want to be positive but how can you be when we have what we do running our country? And now the courts are being packed with Troglodytes who will prevent any real action to reduce CO2. We will burn every last bit of fossil fuel if mother nature doesn't stop us first! The planet will be fine the life on it NOT SO MUCH!