AP: The United Nations’ climate chief on Friday urged countries to be flexible in order to make progress at weeklong climate talks in China next month, the last formal negotiations on climate change ahead of a major year-end meeting in Cancun, Mexico. Christiana Figueres, head of the U.N.’s Framework Convention on Climate Change, said countries need to be willing to negotiate with each other in order to pave the way toward consensus on a global climate deal. “It is in their …