Bite-Size Meaty Chunks of Global Warming
David Roberts on Gristmill extracts a great paragraph from a post by Stuart Saniford on The Oil Drum about global warming. Have a look at it - 21 links to 17 different sources makes this a great potted summary of the state-of-the-art in global warming science. (I don't got the background to know if anything's missing, but it looks good to me, anyway.)