Ignoring the inconvenient facts.
Tom Harris of the National Post refutes - skewers actually - Al Gore's film An Inconvenient Truth:
Gore's credibility is damaged early in the film when he tells the audience that, by simply looking at Antarctic ice cores with the naked eye, one can see when the American Clean Air Act was passed. Dr. Ian Clark, professor of Earth Sciences at the University of Ottawa (U of O) responds, "This is pure fantasy unless the reporter is able to detect parts per billion changes to chemicals in ice."
It gets better as renowned scientists correct numerous points in the film, proving that all scientists do not agree on the subject:
In their open letter to the Prime Minister in April, 61 of the world's leading experts modestly expressed their understanding of the science: "The study of global climate change is an 'emerging science,' one that is perhaps the most complex ever tackled. It may be many years yet before we properly understand the Earth's climate system."

