One of the people I wanted to interview for my Guardian series was the former botanist and broadcaster David Bellamy, who has made a number of wildly misleading statements about global warming. He refused, but Channel 4 has made the film of our memorable battle in 2005 available.

George Monbiot vs. David Bellamy

Not as stylized as his previous videos, this is borrowed from a Channel 4 broadcast. It’s important to attack false scientific claims and it seems rarely done, so Monbiot pushes on in his lonely crusade. If we only had a fleet of environmentalists to tackle every industry or political action committee, every lobbyist and every seated senator, perhaps things could actually change. As always click on the picture to be taken to a page where you can watch the video.