Reuters: The United States and China on Tuesday signed eight partnership pacts to cut greenhouse gases that will bring the world's two biggest carbon emitters closer together on climate policy, but fundamental differences between the two sides remain. Consensus between the United States and China will be a crucial part of any new global climate pact to replace the 1997 Kyoto Protocol, but they have long struggled to come to an agreement on how the costs of cutting greenhouse gases should be distributed among...