The Man Made Global Warming movement is not about science, its a liberal political movement.
...from the U.S. Senate Committee on Environment and Public Works:
...a July 2007 review of 539 abstracts in peer-reviewed scientific journals from 2004 through 2007 that found that climate science continues to shift toward the views of global warming skeptics.
Of 528 total papers on climate change, only 38 (7%) gave an explicit endorsement of the consensus. If one considers "implicit" endorsement (accepting the consensus without explicit statement), the figure rises to 45%. However, while only 32 papers (6%) reject the consensus outright, the largest category (48%) are neutral papers, refusing to either accept or reject the hypothesis. This is no "consensus."
In fact of all papers published in this period (2004 to February 2007), only a single one makes any reference to climate change leading to catastrophic results.
While today we are even more certain the earth is warming, we are less certain about the root causes. More importantly, research has shown us that -- whatever the cause may be -- the amount of warming is unlikely to cause any great calamity for mankind or the planet itself.