Even more evidence of global warming

The National Academy of Sciences has released a new report, in response to a request by the House Science Committee, which states that "[t]here is sufficient evidence from tree rings, retreating glaciers, and other 'proxies' to say with confidence that the last few decades of the 20th century were warmer than any comparable period in the last 400 years." [BoingBoing]

When will all the right-wing conspiracy theorists, who claim that this is all some elaborate hoax intended to attack their ideology, just shut up and cut their losses? Someone should create a central database comprised solely of speeches and talk show appearances in which right-wingers claim that global warming doesn't exist. It would be interesting to see if any of them are still involved in politics fifteen or twenty years from now.

"NAS: Earth hottest it's been in 400 years, humans responsible" [BoingBoing]
"High Confidence in Surface Temp Reconstructions Since A.D. 1600" [The National Academies]