Kim Stanley Robinson is one of my favorite science fiction writers. His works include some of the better collapsitarian novels, The Wild Shore, Pacific Edge and Forty Signs of Rain, plus the brilliant Red Mars. He gives a thoughtful response to the question “Is it too late?”
So on to the much better question: How much of the biosphere can we save? Similarly, how much of civilization can we save (and what parts do we most want to save)?
Ponderings of a Perplexed Primate 