Here is a link to a very well written article disputing the hypothesis of Anthropogenic Global Warming. The gentleman who wrote this is a friend of mine; he served in the US Navy with my father. He is an atmospheric physicist and here is his science bio for credibility.

Editor's Science Bio
James A. Peden - better known as Jim or "Dad" - Webmaster of Middlebury Networks and Editor of the Middlebury Community Network, spent some of his earlier years as an Atmospheric Physicist at the Space Research and Coordination Center in Pittsburgh and Extranuclear Laboratories in Blawnox, Pennsylvania, studying ion-molecule reactions in the upper atmosphere. As a student, he was elected to both the National Physics Honor Society and the National Mathematics Honor Fraternity, and was President of the Student Section of the American Institute of Physics. He was a founding member of the American Society for Mass Spectrometry, and a member of the American Institute of Aeronautics and Astronautics. His thesis on charge transfer reactions in the upper atmosphere was co-published in part in the prestigious Journal of Chemical Physics. The results obtained by himself and his colleagues at the University of Pittsburgh remain today as the gold standard in the AstroChemistry Database. He was a co-developer of the Modulated Beam Quadrupole Mass Spectrometer, declared one of the "100 Most Significant Technical Developments of the Year" and displayed at the Museum of Science and Industry in Chicago.
Anthropogenic Global Warming - Fact or Hoax? An editorial by James A. Peden

I promise you it is worth your time to read it in its entirety.