The Government's latest climate change advert is being investigated by the advertising watchdog after triggering 785 complaints from the public.
It has also been disclosed that the Government's chief scientist, John Beddington, was forced to defend controversial claims in the television campaign, which features a father reading his daughter a frightening bedtime story about global warming.
Clearcast, the body that vets adverts, questioned the scientific evidence used in the campaign. Part of its role is to ensure controversial topics are kept impartial
Dr Beddington and Robert Watson, the energy department's main scientific adviser, responded to Clearcast with a furious letter leaked to Channel 4 news, which states: "We are both surprised and disturbed that the premise of the television campaign is being questioned, given the incontrovertible nature of the science that underpins the campaign material."
The current icon shows Polistra using a Personal Equation Machine.