Here is another good article about the "climategate" issue. The emails came from Russia: did the Russians hack the Hadley computers? I doubt it. I suspect it was an inside job. There are, I suspect, a lot of climate researchers who have serious doubts about the AGW hypothesis. Kieth Briffa appears to have some doubts, and he got mysteriously ill about the time this happened. I suppose a disgruntled grad student is more likely.