This article by Jules and Maxwell Boykoff, critiquing the notion of "balance" in American journalism, is quite good, and helps to explain why many intelligent people in America believe that rising temperatures are probably natural, even though most of the world's scientists do not hold that view. It's all in the framing, baby.
The sad thing about this article is it's three years old and not much has changed. . . The temperature is changing much more rapidly than the frame is. . .