That funny line came from a Seinfield episode. Dr Singer discusses the result of the BEST research by Dr Muller. The results did show that there was a warming in the land based temperatures from the 1950s till 2000. However the ocean based temperatures and atmosphere showed no warming. Zero, none, nada, zilch.
"What the BEST result shows is that surface thermometers from the land area of the globe (about 29% of the earth's surface) show a warming trend. But this is not global warming. And BEST director Professor Rich Muller explicitly disclaims that his trend results indicate a human cause.
He also correctly points out that many of the weather stations used are badly distributed, mostly in the U.S. and western Europe, and possibly subject to local heating effects, such as urban heat islands. He cautions that a third of his monitoring stations show a cooling, not a warming. And that 70% of the U.S. stations are poorly situated and don't satisfy the requirements of the U.S. Weather Service. It is likely that stations elsewhere have similar problems."
Dr Muller also do not claim that the warming prior to 2000 was human induced and that no warming has occurred since 1998. Ooops, CO2 levels have gone up but warming has not. The theory doesn't work does it?
Folks, the emporer has no clothes. CO2 does not cause global warming. We've been had.