. . . but it drives me nuts when folks like Limbaugh, Hannity or the rest of the band of idiots discount it completely simply because it "snows in Arizona" due to some freak, isolated weather event.
Global warming is about the Earth's temperature increasing, on average, a tenth of a degree over, say, a ten year period. If that happens consistently then you can say goodbye to this planet. The fact that we are hit with an ice storm on two days in one week in Decatur doesn't matter one iota.