"Princeton Physics Professor Global Warming Testimony, crushes Gore"
http://www.freerepublic.com/focus/f-news/2284144/posts Statement to the U.S. Senate Environment and Public Works Committee by William Happer, Cyrus Fogg Brackett Professor of Physics Princeton University, made on February 25, 2009.
This is the best article I've ever seen that answers the question "Should we be skeptical." AGW might be happening, but not enough scientific evidence has been documented using legitimate testing standards to warrant spending trillions of dollars and creating another bureaucracy we can never get rid of. Furthermore, it is being pushed on us by The Party of Alinsky - The Party of Manufactured Crises, which uses them as a means to fund itself