Reuters: China is glad a climate change roadmap agreed last week in Bali has drawn the United States to the negotiating table, but the world’s only superpower must do more to tackle global warming, a top official said on Thursday. Yu Qingtai, China’s climate change ambassador, said Beijing was satisfied with the hard-won plan, finally agreed after two weeks of talks overran by a day into a dramatic final session marked by tears, booing and a series of standing ovations. Nearly 200 …