A documentary, by British television producer Martin Durkin, which argues against the virtually unchallenged consensus that global warming is man-made. A statement from the makers of this film asserts that the scientific theory of anthropogenic global warming could very well be "the biggest scam of modern times." According to Martin Durkin the chief cause of climate change is not human activity but changes in radiation from the sun. Some have called The Great Global Warming Swindle the definitive retort to Al Gore's An Inconvenient Truth. Using a comprehensive range of evidence it's claimed that warming over the past 300 years represents a natural recovery from a 'little ice age'.