Given their constant assertions that "the verdict is still out" on global warming, it seems they're pretty sure about this. Here's episode #77584 of "how stupid are these people?" featuring the creepily hot Dana Perino.
From Think Progress:
I have to say that her remarks at the end about "not being an expert" and "letting Julie Gerberding answer that question" are particularly laughable given that the question was about censoring Dr. Gerberding;s testmony before congress. Does she really not understand the fundamental contradiction between the idea of allowing someone to give there expert opinion and censoring it for political purposes?