Just to hop into this a little....
I do believe in global warming, but I try to keep an open mind. All of the scientific data that I have seen points to it. I agree that it's not a fact - everything about it is based off of statistical analysis. However, the numbers do seem to be showing a significant increase in worldwide temperature, as well as an increase in greenhouse gasses, which would seem to imply that global warming is reality. However, if you have/have seen some data that challenges this analysis, I would definitely like to see it and would give it serious consideration.