A British documentary that declared climate change to be a willful and conspiratorial hoax broke impartiality rules and misrepresented the views of some participants, British broadcasting regulator Ofcom said Monday. The not-so-subtly named The Great Global Warming Swindle, which aired on Britain’s Channel 4 in March 2007, said at one point in its narration, “Everywhere, you are being told that man-made climate change is proved beyond doubt. But you are being told lies.” However, while Ofcom highlighted “aspects of the presentation (and omission) of facts which caused some concern,” the regulator declined to hold the channel accountable for “materially misleading the audience so as to cause harm or offense.”