Guardian: Ed Miliband has called on the UK to become the first country in the world to enshrine in law a target of reducing carbon emissions to zero. The former Labour leader and energy secretary said Britain should show leadership and send a clear signal to businesses by building on its existing target of cutting emissions by 80% by 2050 under the Climate Change Act. The intervention, in a comment article for the Guardian, comes a week before world leaders including David Cameron and Barack Obama meet for...