Take a look at that chart.
This issue is fascinating to me, and highlights the problems of ferreting out truth in the midst of the information age glut. What is clear, even from a cursory Google search, is that both sides of the Is Global Warming Real? debate can marshal their statistics, can call upon an army of scientific experts, and can form convincing arguments to buttress their case. So who is right? And how do we know? And what are the possible consequences if we think we're right, and it turns out that we're wrong?
The religious component of the Pew poll is fascinating as well. Why is it that white evangelicals are disproportionally skewed in the direction of disbelieving in global warming? What might be behind such views? Is it because they have greater access to scientific data that is not available to other segments of the population? Is it because they tend to be Republican, and they can't stand the thought that the despised Al Gore might be right? I really don't know. But it's very curious.