"We may get to the point where the only way to save the world will be for industrial civilisation to collapse."Because things were soooo much better before industrial civilization.
Just do me a favor, and go back and read that one more time. Go on; I'll wait. The logic is astounding, isn't it? It's like saying "it may be that the only way to prevent further wars is to all commit suicide tomorrow." Oh, sure it will work, but at what cost. Someone needs to introduce Mr. Strong to the term "Pyhrric victory."
Let's face it: the "world," or "the planet," or "the environment," or whatever term you want to use has been here a long time in one form or another, and it's going to be here a long time after our species is gone. Our whole of recorded history, cosmically speaking, is a blink of the eye, a fart in the wind. Less, even. I'm getting really sick and tired of people trying to cloak their political views, or some misguided hatred of industry/capitalism/etc. in a robe of altruism.
Anyway, I've said it before, and I'll say it again: If I were a betting man, I'd wager that an apocalypse by asteroid is much more likely (and sooner) than an apocalypse by AGW.