Of the 35 percent who cite lacking evidence for their disbelief, half say it’s because man-made global warming is “just not happening” or that we “don’t know enough yet” about the issue to tell. Pew says that “business conservatives” and “steadfast conservatives” have the largest majorities that don’t believe in man-made global warming, with 75 percent and 71 percent, respectively.
Forty percent of Americans believe that mankind is causing the planet to warm. So-called “solid liberals” are the most likely to say human activity is warming the Earth — 78 percent of this group believes this to be true.
