Well, as I understand it, there is almost no debate among scientists about whether or not it exists. This is what I have heard, not just from Al Gore, but from college professors and people who extensively study this stuff. The only dissent for the most part that I have heard is from people who seem to only oppose it for political reasons.
A while back, Al Gore came here to give a speech about this subject, and there was this group of Young Republicans who protested outside, and claimed that he was just lying to make money off of people. And of course, they made no secret about the fact that they were republicans, which is practically admitting that they're only there to disagree with the horrible evil democrat who works for the devil. I suppose I don't have to add that they offered no scientific rebuttal of their own, they just said "He's lying, and he only wants your money", and that's it. Yeah, that's really thinking critically.
Of course, no one wants to believe that we're slowly destroying the planet, and that we're all in grave danger. I sure as hell don't. However, you can't deny the overwhelming evidence. With all the CFC's and other shit that we're pumping into the atmosphere every day, and the noticable increase in temperatures and severe weather, that's obviously enough to raise a few eyebrows. And furthermore, did you know that we are the only superpower in the world who hasn't signed the Kyoto Agreement, an agreement to take active measures to reduce the amount of CO2 and other harmful gases into the atmosphere? And we're obviously responsible for a considerable percentage of that. All of the other countries with large populations have signed it, but we haven't. I don't know about you, but that kinda ticks me off. Even if somehow most scientists are wrong and global warming doesn't exist, we're definitely going down a bad road here.
But anyway, I don't really want to get into a big debate about this. I was just using this as an example of how people make arguments based on nothing but partisan politics. I just find it really frustrating when people are just stubbornly dismissive on this, or any other issue. I'm not claiming to know everything about the subject, but I have taken the time to try to educate myself on it, and have actually thought about it, and I can't possibly deny that we're doing a lot of things to fuck this planet up. Not trying to preach or anything, just giving my perspective based on what I've learned.