If you’re looking for some background on the UN Climate Change Conference in Bali, Nature News has a nice roundup (subscription required). They’ve put together their coverage of the IPCC reports released over the past year, plus related stories stretching back to 1990 and some recent commentaries. Any news stories they report from the meeting will go up on the same page. The Nature Reports Climate Change archive also has lots on the IPCC and the Bali conference.