How Obama Can Seal His Climate Change Legacy

U.S. voters have delivered their verdict, handing Barack Obama four more years as president. But how will history judge his performance on climate change – which barely got a look-in during the campaign, but may later come to be seen as the defining issue of our era? Passing new laws to cut greenhouse gas emissions remains unlikely, with the House of Representatives still controlled by a Republican majority dominated by climate change sceptics. But Obama has a few key policy levers at his disposal via existing laws – and in his second, and final, term may be less wary of using them.