In a new peer-reviewed paper, I measured the impact of all of the biggest carbon-cutting commitments being made before the summit. It shows that the current EU climate policy – the so-called 20/20 policy, which promised to cut emissions to 20 per cent below 1990-levels - will achieve very little. Even if the EU maintains its cuts all the way through the century and even if none of its cuts are exported (which for now seems wildly unrealistic), the reduction in temperature rise by the end of the century is a miniscule 0.026°C.