Who says the issue of man-made global warming has been settled? The journal Physics & Society just published a debate on the subject because, according to the editor,
There is a considerable presence within the scientific community of people who do not agree with the IPCC conclusion that anthropogenic CO2 emissions are very probably likely to be primarily responsible for the global warming that has occurred since the Industrial Revolution. Since the correctness or fallacy of that conclusion has immense implications for public policy and for the future of the biosphere, we thought it appropriate to present a debate within the pages of P&S concerning that conclusion.
You can see the rest of the editor's comments here:
One of the conclusions found in the Journal paper called "Climate Sensitivity Reconsidered" is particularly interesting:
In short, we must get the science right, or we shall get the policy wrong. If the concluding equation in this analysis (Eqn. 30) is correct, the IPCC's estimates of climate sensitivity must have been very much exaggerated. There may, therefore, be a good reason why, contrary to the projections of the models on which the IPCC relies, temperatures have not risen for a decade and have been falling since the phase-transition in global temperature trends that occurred in late 2001.
That paper can be found here: http://www.aps.org/units/fps/newsletters/200807/monckton.cfm
Another interesting tidbit from the article: In the past 70 years the Sun was more active than at almost any other time in the past 11,400 years ... Mars, Jupiter, Neptune 's largest moon, and Pluto all warmed at the same time as Earth.