Wow — it turns out that after hundreds of millions or even billions of years of remaining stable, the world climate will, due to (at most) a few tenths of degrees of man-made warming and an increase of a trace gas composition in the atmosphere by about 0.01%, go past its tipping point or point of no return and run away to catastrophe. I sure wish there was a prediction market where I could bet against this. See this end of the world website here (HT to a reader).
Given a bit more time, I will try to take on in depth the underlying article behind this site. But for now, suffice it to say that underlying hypothesis is that the world’s climate is dominated by positive feedback, a hypothesis, if true, that would set climate apart from nearly every other natural process that we know of. In fact, the only major natural process I can think of that is dominated by positive feedback and tipping points is nuclear fission. Here are many articles on how catastrophic forecasts assume large positive feedbacks and why this assumption is unlikely.