read Michael Chrichton's book "State of Fear". A good read and deals with this very aspect - "we all know it's true, so it's true - isn't it" ????
He even provides some good references to dissenting scientists/research right in the middle of the book.
This article debunks Global Warming written in 1997.
http://www.junkscience.com/news/robinson.htm
You're right about Michael Crichton's book. I'm half way through and have found that this book is in line with this article. Global warming leaders/followers are treating this as a religion, not based on real and documented facts. The book is interesting and filled with footnotes that point to documented facts that dispute Global warming.