ClimateWire: The job of Denmark’s Connie Hedegaard, as chairwoman of the U.N. Climate Change Conference in Copenhagen in December, is to lead negotiators from some 190 countries toward a deal that would replace the Kyoto Protocol. With only three weeks before the conference begins, there is a crescendo of voices around the world declaring that her job is impossible. Hedegaard disagrees. A former journalist who has a master’s degree in literature and history, she is a skilled communicator who …