I was considering writing a longer post than normal about how badly the current administration has treated science. It's a topic that keeps coming up, and now there are even books about the topic [e.g., The Republican War On Science]. I got as far as writing down some notes, which I may go back to in the future, but for now I think Dan Froomkin of the Washington Post has done a quick review [LINK]. Actually, only about the first half of the column, which is really more of a list of links, is specifically about science, and not all of that is about climate science, but there seems to be a strong case that GWB and his buddies don't value science when it doesn't help them out directly, and that prejudice is present in other areas, as important as national security, as well.
Another WaPo article, this one by Juliet Eilperin, discusses the possibility of a climate change "tipping point" [LINK]. It gets into the James Hansen/NASA story toward the end.