But, speaking at the MediaGuardian Edinburgh International Television Festival yesterday, Newsnight's editor, Peter Barron, and the BBC's head of television news, Peter Horrocks, attacked the plan, which also seems to contradict the corporation's guidelines. Asked whether the BBC should campaign on issues such as climate change, Mr Horrocks said: "I absolutely don't think we should do that because it's not impartial. It's not our job to lead people and proselytise about it." Mr Barron said: "It is absolutely not the BBC's job to save the planet. I think there are a lot of people who think that, but it must be stopped."