I'm not entirely sure why the Post keeps allowing George Will to write about climate change. It's one thing to have different opinions -- that's fine. But it's quite another to write demonstrably false factual statements again and again.
Will's basic argument seems to be that the United States shouldn't do anything about emissions because no one else in the world is. The point, however, of unilateral action is that it makes it easier to get international emission cuts -- the goal is for a snowball effect.
But anyway, Will can't stop there. Near the end, he has to add (with no evidence) that skepticism of global warming is "growing." Then, he goes on to quote Mark Steyn (who himself relied on the discredited freelance report from the EPA economist) for the point that global warming hasn't even happened in the last few years.
Of course, the long-term temperature trend shows clear warming. And short-term variation doesn't change that objective fact. It's like measuring annual rainfall by looking only at what happened last week. It's blatant factual dishonesty.