The world needs to cut 28bn tonnes of emissions, current pledges only come to 4bn. Leaders cannot shy from this reality
• Ed Miliband is the shadow secretary for business, energy and industry
The defining choice facing leaders in Glasgow this week at Cop26 is whether to sugar-coat reality or be honest about the climate emergency, and demand the action that will be necessary to confront it. If we are to have any chance of preventing catastrophe, we must choose truth and candour.
The most important truth is the maths. For all the millions of words spilled about this summit, not enough has been done to spell out its central task. Many leaders say we need to limit global warming to 1.5 degrees, but few say out loud what that means.
