Like I said, I cannot force my opinions onto you. It's good that you're still doing your bit for the environment. But what would you rather have: an opinion, or an informed opinion? Because if you haven't researched both sides of the argument, all you really have is an opinion, and an uninformed one at that.
One the one hand, if we do nothing, and global warming turns out to be happening and to be driven by man, then we have everything to lose. We have our existence, the existence of every other living thing, we have the world, to lose. On the other hand, if global warming isn't happening and isn't driven by man, and we do everything to stop it just in case, what have we lost? Nothing, except for maybe a bit of weight, which, given the obesity epidemic, would be a good thing. Maybe we would have reduced our dependence on Arab oil, as well. So which would you rather lose? The Earth and everything on it, or a little bit of weight!?