No matter what one thinks about the catastrophic anthropogenic global warming hypothesis, the scientific dishonesty of the UN IPCC and liberal politicians in many nations is a disgrace. Here are two articles that you should review with an open mind, no matter how strongly you feel about AGW. The attempts to eliminate the Medieval Warm Period from history remind me of the sort of thing communists used to do. And, in fact, the advocates of the AGW hypothesis are proponents of liberal authoritarianism.

http://scienceandpublicpolicy.org/images/stories/papers/monckton/monckton_what_hockey_stick.pdf

http://canadafreepress.com/index.php/article/4941