Telegraph: Ed Miliband must be the bravest man in Gordon Brown’s Cabinet. Anyone who would agree to serve as Secretary of State for Energy and Climate Change has to be either very dull or very brave. And no one has ever accused this Miliband of lacking brain power. Miliband’s first problem is the contradictory nature of his mission, which he describes as “sustainability, security and affordability”. Sustainability means reducing the carbon content of the fuels Britons use to heat their homes, …