This film by the documentary-maker Martin Durkin presents the arguments of scientists and commentators who don't believe that CO2 produced by human activity is the main cause of climate change. It's a controversial film that was roundly attacked by some scientists and enthusiastically received by others, and the arguments it contains are an important part of the wider debate on the causes of climate change. The film was shortlisted for the Best Documentary award at the 2008 Broadcast Awards.