(personally, i find even the possibility of having already triggered enough positive feedbacks to make a major climate state change unavoidable scarier than the collapse of consumerism and a few gigadeaths. Especially seeing as how the sun is hotter than when things of similar magnitude happened in the deep past, so there are no guarantees that this one won't go all the way to Venus-like heat death.)
Yes. http://www.inference.phy.cam.ac.uk/withouthotair/c1/page_5.shtml
(personally, i find even the possibility of having already triggered enough positive feedbacks to make a major climate state change unavoidable scarier than the collapse of consumerism and a few gigadeaths. Especially seeing as how the sun is hotter than when things of similar magnitude happened in the deep past, so there are no guarantees that this one won't go all the way to Venus-like heat death.)