A FEW days ago the Times broke the story of a leaked memo from Whitehall, in which it was claimed that the government is considering economy-wide carbon taxes. Amongst the most troubling of these interventions were demands from academics and campaigners that the price of domestic gas, meat and cheese must be increased to change our behaviours. Such was the scale of the instant blowback that by the evening the Sun reported the idea had been thoroughly nixed by Number 10. Poof! The ambition which had for decades underpinned climate lobbying and policymaking evaporated in hours.