Agence France-Presse: The UN’s top climate official on Wednesday voiced doubt about the prospects for completing a new pact on global warming in Copenhagen by its much-touted December deadline. “I don’t think it is possible between now and the end of Copenhagen to finalise every last detail of a post-2012 [accord], of a long-term response to climate change,” said Yvo de Boer, executive secretary of the UN Framework Convention on Climate Change (UNFCCC). “There is going to be work after Copenhagen,” …