Time Magazine: Popularly, China is a villain in climate change. Many people who attended last year’s chaotic U.N. climate-change talks in Copenhagen — especially those who belonged to the U.S. delegation — singled out China as the main reason the summit nearly collapsed. Chinese diplomats fought hard against any form of emissions regulation, even though their country is now the world’s No. 1 national carbon emitter, and will emit far more carbon in the future than any other. In Washington, opponents of …