SANDERS: "August 17, 2011, CBS News, quote, 'Republican presidential candidate Rick Perry said Wednesday morning that he does not believe in global warming science and suggested it is grounded in scientists manipulating data for financial gain. He said the climate is changing but it has been changing ever since the Earth was formed. Perry added that the issue of global warming has been politicized and argued that America should not spend billions of dollars 'addressing a scientific theory that has not been proven, and from my perspective, is more and more being put into question.'' That position is at variance with virtually the entire scientific community that has studied climate change. In fact, the scientists that I hear from believe that climate change is the great planetary environmental crisis that we face and that we need to move forward aggressively to transform our energy system away from fossil fuel to energy efficiency and sustainable energy."