Romney has rejected the scientific consensus on climate change:
Romney claimed “we don’t know what’s causing climate change.” As Think Progress documented, during a campaign appearance in Pittsburgh, Romney “reversed his earlier stance on climate change pollution and rejected man-made global warming.” Romney stated: “My view is that we don’t know what’s causing climate change on this planet. And the idea of spending trillions and trillions of dollars to try to reduce CO2 emissions is not the right course for us.” [Think Progress, 10/28/11].
Romney advisor: Romney “doesn’t know” whether “human activity is causing” climate change. The Los Angeles Times quoted Oren Cass, Romney’s domestic policy advisor, as saying of Romney: “He doesn't know the extent to which climate change is occurring or that human activity is causing it." [Los Angeles Times, 6/13/12]