I have a postmortem science degree, but hobby in studying paleontology/pre-history. It took a rise of only 10°C and excess pollution to wipe out over 83% of all life on the planet between the Permian and Triassic eras. Entire chains of life just wiped out. Carbon dating, sediment layer study, fossil records, they all show how screwed me are if we keep this up. The earth will survive, it always does, but it took 30 million years before life recovered.
Humans need to learn from the past, see the consequences of what most would think is a small change, but the ones in power don’t seem to give a shit.