I know we've got people on here who are very interested in this type of thing, so I thought I'd link this:
Peer-Reviewed Study Rocks Climate Change Debate . It's from the Journal of Geophysical Research.
Three Australasian researchers have shown that natural forces are the dominant influence on climate, in a study just published in the highly-regarded Journal of Geophysical Research. According to this study little or none of the late 20th century global warming and cooling can be attributed to human activity.
I haven't looked into this very much but thought it was interesting.
PJ