Here is an interesting blog on Global Warming.

http://rightwingnuthouse.com/archives/2006/05/27/who-do-you-believe-on-global-warming/

It seems to me that the whole issue is like religion. Belief is based on faith, not facts. Everyone admits that the Global Circulation Models are not accurate, and have discretionary factors that can cause widely variable results; anything from another ice age to a tropical North Pole. But, it is a fact that carbon dioxide in the atmosphere absorbs heat at some wavelengths. What I don't understand is the emphasis on carbon dioxide reduction. It would be good, and will eventually be necessary to develop non-hydrocarbon based energy sources. But it is not necessary to do it tomorrow. If heating starts to be a problem, we could easily reduse temperature by injecting particulate matter into the atmosphere such as happens in a volcano eruption. We might want to be careful about that though. There have been occurrences such as "the Year with No Summer" following a volcano eruption. History does show that it would be easy to deliberately reduce the temperature on Earth. History also shows that people do better when it is warmer, so we might want to be careful about deliberate cooling.