@Hex You wrote "on track to make complex human society impossible"? When I searched for worst case scenarios it never stated anything that would have that consequence and I looked for runaway greenhouse effect, tipping points, permafrost, methane, venus, max ambient temperature for sweat to cool ...

AlI I read suggests that igniting even all fossil fuel reserves would not be catastrophic (as in extinction event) to humanity and most certainly not to Earth.

So what should I read to convince me otherwise, if I may ask?