Now here is a Yahoo News article about the phenomenon, with some history of prior claims thrown in for good measure. It doesn't take such claims seriously either. Of course, all end-of-world claims will be wrong except the final claim.
Nobody predicts what actually might happen: the end of human existence. Gaia is likely to continue, but might resemble Mars - as far as we know uninhabitable.
Maybe this is what the warmers claim will happen. I think they're wrong, too.