Really? Since when are liberals climate guru's.... Actually the REAL liberals have been denying that stuff until they could no longer do that. Maybe it's because liberal is the most envorinmental thing you guys got in the politics US, that now that the liberals can no longer deny it that you guys think it's a liberal thing, but actually it came from what we call the "Green Ones"... who are actually not pro-liberal... on the contrary, and three guesses why! :P