I am a skeptic of Global Warming. I believe that most people are hypocrites on the matter, whatever they say.
I have no good evidence of global warming. I've always endured high temperature where I live, and they're not getting worse. Also, I feel that all the "massive trend" is not really true. There is, in my opinion, nothing in our atmosphere messing us up. What I believe is one of the problems is the amount of air conditioning, as much as anything else. Energy can be converted, but not destroyed. Heat will not conduct into space at a major rate. Basically, air conditioning is putting what would be 90+ degree temperatures in a large area into 72 degrees. It may not be much, but add in skyscrapers, and you've got a large volume of cooled environment. Not to mention more specific cooling devices such as refrigerators. You end up cooling a small area, and the heat goes outwards. Now, it's not much of a change, but I seriously believe that it's one of the only things affecting our environment. So, Al Gore, go sit in your air-conditioned gas-guzzling limo and keep on speaking.
Also, anyone else noticed how few of the exponents of global warming are actually scientists? Or how few of them practice what they preach?