Agence France-Presse: The United States has a profitable self-interest in assisting Chinese efforts to combat climate change, China’s ambassador here said Thursday as global talks loom. Zhou Wenzhong said China must focus on industrial growth to lift millions of its citizens out of poverty but was not stinting in the global warming fight, outlining a national government plan on efficiency and renewable energy. But he said China and the United States, the world’s two biggest polluters, could …