The report by the Intergovernmental Panel on Climate Change is in the final stages of editing and is expected to conclude that there is at least a 90 percent probability that human-caused emissions are the main driver of warming since 1950.

``We basically have three choices - mitigation, adaptation, and suffering,” said John Holdren, the president of the American Association for the Advancement of Science and an energy and climate expert at Harvard University. ``We’re going to do some of each. The question is what the mix is going to be. The more mitigation we do, the less adaptation will be required and the less suffering there will be.”

There is about 25% of the population who will never be convinced. Chances are they also deny the theory of evolution and support George W. Bush.