BBC: The UK government’s official climate change advisers have raised the bar on ambitions to cut emissions. The Committee on Climate Change (CCC) said a cut in greenhouse gas emissions of at least 80% by 2050 should include international aviation and shipping. It said other industries would have to make up any shortfall in those areas. Prime Minister Gordon Brown has intimated at an 80% cut, but ministers have been wary of counting aviation and shipping, where cuts are …