Reuters: China said on Tuesday it would unveil new plans for tackling global warming at a United Nations summit next week that will try to break deadlock between rich and poor nations on a new climate treaty. President Hu Jintao “will announce the next policies, measures and actions that China is going to take,” senior climate negotiator Xie Zhenhua said of the September 22 summit in New York. Xie told reporters that China, which has overtaken the United States as the top greenhouse gas …