Among the 26% of the public who say there is no solid evidence of global warming, about as many say “it’s just not happening” (13%) as say “we just don’t know enough yet about whether the earth is getting warmer” (12%).

Opinions of Republicans and Republican-leaning independents divide into four roughly equal size groups: 23% say there is solid evidence of global warming and it is mostly caused by human activity; 19% say warming exists but is due to natural patterns; 25% see no solid evidence and say it is just not happening; 20% say there is no solid evidence but not enough is known yet.

Among Tea Party Republicans, the largest share –41% – says that global warming is just not happening, while another 28% say not enough is known. Among non-Tea Party Republicans, just 13% say global warming is not happening and among Democrats and Democratic leaners, just 4% express this view.