[randog]

“Our results imply that, over the past century, climate change due to human influences must far outweigh the effects of changes in the Sun's brightness,” says Wigley.

Which explains the drop in temperatures between 1945 and 1975, right? No human industrial activity then. Oh, wait--there were no SUV's back then...yeah, that's it...

[palmer]

I agree with you that authors are too focused on manmade global warming, but I don't think that affects their conclusion that the sun isn't the explanation. Did Mars experience the same drop in temperatures between 1945 and 1975? Somehow I doubt it.