Booger, your post betrays a near-total ignorance of the discussion, as usual. By the way, it is because the US is such a large part of the problem that it is important that it be part of the solution. Your "logic" is whack.

Duke, proofs are for mathematics, not science. You've brought up a couple other potential causes of GW, but you don't want to play by the same rules of evidence concerning them. Correlation is evidence, whether you admit it or not, and by the time "proof" arrives it would be too late.

Eh, we'll see. The world, inspired by a clueless, selfish US, will continue the experiment on our climate. Humanity will survive, although (if I'm right) there will be more disruption and death than if we'd experience had we done a few doable things starting now. If GW stops or reverses, I will very gladly admit I read the situation incorrectly. If GW continues or accelerates, you'll just keep blaming it on something--anything--other than greenhouse gases. You can't lose with your know-nothing, do-nothing stance.