And now even worse
There were five extinctions of life on our planet. One of them, the Permian-Triassic event 251 million years ago cause the extinction of 96% of sea life and 70% of terrestrial vertebrate species. This was likely to have been caused by a sudden methane release from the ocean floor flooding the atmosphere with a greenhouse gas dramatically increasing global temperatures. This happens because of sudden influx of greenhouse gases into the atmosphere. When it is slower the ocean and atmosphere is able to handle it. That is what happened at the Permian-Triassic, a sudden huge amount of methane thrown into the atmosphere. Skeptiks can say that there have been times with more CO2 or methane in the atmosphere without global warming, but that is because it is gradual. When it is sudden, as we are doing right now to the atmosphere, the oceans aren't able to handle it and we have severe global warming. But is what is happening now anything like what happene...