No, sorry, it's not about global warming. It's about two opposing items in today's WSJ concerning McCain in particular. The op-ed compares him with Obama, criticizing their collectivist emphasis, which suggests that McCain isn't "conservative enough" for quite a few people. On the other hand, the letter opines that the GOP is "too conservative" and needs to include people other than the vast Right Wing Conspiracy, a.k.a. "wingnuts" in some circles.
Oddly, I agree with both positions. On the anti-McCain side (although I will vote for him because he's better in many areas than the other candidates realistically running for President), I agree that collectivism should not be foremost on the nation's mind. Granted, "if we do not hang together, then we shall certainly hang separately," but the nation was founded on individual rights as one of its cornerstones. On the inclusive-of-all-degrees-of-conservatism side, I think that, like America as a whole, the GOP can and perhaps should be a melting pot. However, that doesn't make it necessarily homogeneous - just as all the ingredients of a soup, while being similar, do not intermingle; instead, they retain their individual facets of soup-ness (or conservatism, depending on the soup).
Go have some mixed leftovers and mull this over.