Brilliant example of appeal to authority fallacy...

......in this brilliant bit of cross examination by Senator Ted Cruz of Aaron Mair, the head of the Sierra Club, who repeatedly responds to questions of whether the Sierra Club would retract his testimony upon presentation of contrary evidence (like satellite temperature measurements of the last 18 years) by noting that he "agrees with 97% of scientists."

Sorry, Sierra Club, and sorry, Mr. Mair, but we have a phrase in my profession:  "In God we Trust; all others must provide data."  If you appeal to authority, you are ipso facto not appealing to science.  The weakness of climatology research is demonstrated in tactics like this.