Here's an article regarding polar bears that you might find interesting. It's a few years old but I doubt that much has changed in a few years. I'm not saying global warming doesn't exist. However, I'm skeptical due to 1) the fact that data was manipulated and 2) there is evidence of just the opposite, that the earth is cooling, not warming. I think we need to use common sense approaches. I don't think cap & trade is the answer but I won't argue with conservation such as making cars more fuel efficient and finding alternative energy sources. Those make sense for more reasons than just the environment alone. They are win-win solutions. Here's the article link:
http://www.ncpa.org/pub/ba551/