A favorite climate ploy of the crackpot rightwing creationists and other reality deniers is claiming that a warmer Sun is responsible for observed climate warming. Lou Dobbs, no lefty he, had representatives for both sides on his show. I was impressed by how effortlessly the scientist managed to puncture this particular bit of nonsense. If the Sun is hotter, he noted, why is the upper atmosphere cooler while the lower atmosphere is warmer? The "upper cooler, lower hotter" pattern is an unambiguous greenhouse effect signature. There is no plausible way for a warming Sun to produce such an effect. The perp has to be in our atmosphere.