How about a little Mark Steyn on the subject:If "global warming" is real and if man is responsible, why then do so many "experts" need to rely on obviously fraudulent data? The famous "hockey stick" graph showed the planet's climate history as basically one long bungalow with the Empire State Building tacked on the end. Completely false. In evaluating industrial impact, the Intergovernmental Panel on Climate Change used GDP estimates based on exchange rates rather than purchasing power: As a result, they assume by the year 2100 that not only South Africans but also North Koreans will have a higher per capita income than Americans. That's why the climate-change computer models look scary. That's how "solid" the science is: It's predicated on the North Korean economy overtaking the United States.
...should be called the "Hockey Puck" graph!