The Economic Impact of Cap and Trade

http://www.heritage.org/Research/EnergyandEnvironment/tst050709b.cfm

"Analysis by the Environmental Protection Agency (EPA) shows that a 60 percent reduction in CO2 emissions by 2050 will reduce CO2 concentrations by only 25 ppm in 2095. This reduction would affect world temperatures by 0.1 to 0.2 degrees C. In other words, it makes virtually no difference."