Forty-eight percent of Republicans agree that there is "solid evidence" that Earth's temperature has increased over several decades. That's a 5-percentage-point climb among Republicans since last year, and a 13-point rise since 2009. The biggest jump among Republicans came from conservatives, 43 percent of whom now believe in climate change, an increase of 12 points since last year. Fifty-eight percent of Republican moderates believe in it.
However, far fewer Republicans believe that climate change is man-made. About 38 percent of GOP moderates say human activity, including the burning of fossil fuels, causes climate change, and only 16 percent of conservatives agree with that. (Read more)