The paleontologist Peter Ward has made a fairly compelling argument (in both academic research and the popular science book Under a Green Sky), that virtually a

The paleontologist Peter Ward has made a fairly compelling argument (in both academic research and the popular science book Under a Green Sky), that virtually all major extinction events are related to sudden rises in atmospheric CO2. A lot more happens when CO2 rises quickly other than it getting warmer. A major issue is it's impact on the oceans, which can become anoxic [0], causing them to emit hydrogen sulfide instead of oxygen. Such an event would be devastating to our current ecosystem. > There won't be an extinction event. This also ignores the fact that we are currently in the 6th largest extinction event in the history of life on this planet [1]. Elizabeth Kolbert's The Sixth Extinction is a great book on this (and the history of our understanding of species extinction as well). So aside for being naive about the science, your comment reads a bit like claiming you don't think it will rain today while in the midst of being soaked in a massive rain storm. 0. https://en.wikipedia.org/wiki/Anoxic_event https://en.wikipedia.org/wiki/Anoxic_event 1. https://en.wikipedia.org/wiki/Holocene_extinction https://en.wikipedia.org/wiki/Holocene_extinction