Agence France-Presse: China, the world's biggest polluter, will sign a joint pledge with the European Union this month to seek a UN agreement to tackle climate change as one of "the greatest threats facing humanity," according to a draft statement seen by Reuters. Chinese Premier Li Keqiang will endorse the statement at a June 29 summit in Brussels with EU leaders, who are seeking to ratchet up the pressure for a deal at the Paris climate conference late this year, EU officials said. "The EU and China recognise their...