> I'd say it's more akin to them warning there may be more insidious or less-well-understood dangers to human civilization and the Earth biome than just global

> I'd say it's more akin to them warning there may be more insidious or less-well-understood dangers to human civilization and the Earth biome than just global warming. > Personally, mass extinction of species comes to mind. A wide variety of species enables equilibriums to be established with changing conditions, given a proper allowed rate of evolution. From what I understand, the main existencial issue of CO2 and the subsequent global warming is the extinction of oxygen producing plankton in the oceans, which are apparently much more significant O2 producers than a typical forest. This isn't a large multi causal multi-species antropogenic extinction, it is a single group extinction failure mode, directly caused by 'just global warming' which will automatically mean game over. We absolutely do need to curb greenhouse gases (not just CO2) and decelerate the trend of global temperature increase.