Do You Believe in global warming?

I recently saw an article written by someone that thought he had an expert opinion on the subject of Global Warming and tried to give it factual claim. I wrote the following response to this article:

The polar ice caps have been melting since the beginning of time... And polar ice caps have been regenerating since the beginning of time... Just because someone can take pictures, aim some computer models and release a bunch of propaganda that global warming exists, doesn't make it real or man made. I could take some pictures, aim some computer models and release a bunch of propaganda that "the sky is falling"-(Chicken Little), but that won't make it real. Consider that we have just recently within the last 20 years developed instrumentation accurate enough and computer models powerful enough to have relative success in predicting the weather tomorrow, let alone an accurate prediction a century away. We simply do not have enough historical data to substantiate the global warming claims. The data that we do have from the last 20 years actually disproves their claims, but it is politically incorrect to report this scientific fact. Before you start stating Global Warming THEORY as fact, you should do some research on the validity of the models that have predicted global warming for the last 10 years. I don't think a single computer model predicting global warming has been proven valid, nor has there been noticeable or significant changes to our environment. The only problem I have noticed has been a lot of hot air being released by politically motivated people. When you consider the economic catastrophe in store if political environmental strategies are implemented, Do we really want to be wrong on this? At this point Global warming is truly just a theory and nothing more. Those that seek to make it fact before it has scientific claim are only stepping out in faith... Do you believe in Global Warming or not? Who is standing on scientific fact and who is stepping out in faith? I challenge all that do believe in Global warming to not read the summations of the so called "experts", but instead think independently and seek the truth...