Please go see An Inconvenient Truth. I dare you.
I highly doubt that anyone can go into that movie with a "global warming is not a problem" mindset, but still with a semi-open mind, and come out thinking the exact same thing. And if you do have that mindset still, I highly doubt you'll have sound reasoning behind it (most likely it'll just be stubbornness).
So go see it. And don't come with the Fahrenheit 9/11-esque bullshit. Watch the movie, and actually listen to the facts. Have some balls to put your beliefs to the test. Don't follow in the President's footsteps and say you're not going to see it simply because you're scared.