well frankly there is that entire thing with the CFC and that hole in the Ozone but apparently that is slowly recovering which is good. I think there are global changes but Al Gore did stretch the true in some areas of his movie and told the straight truth about some things too. This is just my opinion but from what I've seen just happening around my area there are major global effects, whether completely causes by us or not at all is what is debatable. For example last year it was two warm for bears to hibernate (up here in New Hampshire) thats pretty bad, the thing about localized change is true but since most of our pollution comes from the west there is an effect over very large regions of the globe.
Thanks for explaining the communism thing though (takes off dictator hat)