I know I'm always posting about this stuff (maybe we need a sister blog just for global warming doom-mongering), but there's an excellent piece by the ever-reliable John Lanchester in the current LRB: Warmer, Warmer.
"I don’t think I can be the only person who finds in myself a strong degree of psychological resistance to the whole subject of climate change. I just don’t want to think about it. This isn’t an entirely unfamiliar sensation: someone my age is likely to have spent a couple of formative decades trying not to think too much about nuclear war, a subject which offered the same combination of individual impotence and prospective planetary catastrophe... I suspect we’re reluctant to think about it because we’re worried that if we start we will have no choice but to think about nothing else."