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The debate sparked by documentary film An Inconvenient Truth

Filmmaker David Guggenheim worked with Al Gore on the documentary film An Inconvenient Truth and together they helped to spark a debate about global warming and generate a tidy return at the box office. Ultimately most documentary filmmakers know that their movie isn’t going to change the world but they almost all hope to inform and raise debate when they’re dealing with controversial subjects like global warming.
For months after the movie was released the subject was talked over and it’s possible that some of the folks that were in the camp of non-believers changed their minds when they saw the movie or heard the rousing debates afterwards. With a subject as touchy as global warming all you can really hope for is to get people talking and thinking about it. Once they’re doing that minds tend to change and it’s a beautiful thing.