Salt Lake Tribune: Utah Lt. Gov. Gary Herbert listens as China scholar Susan Shirk, of the University of California, San Diego, talks to the assembled governors at the Western Governors’ Conference about China’s energy technology and the environment. (Paul Fraughton / The Salt Lake Tribune) Park City » The United States will have to dance a delicate diplomatic waltz to work toward an agreement with China to tackle climate change, but the cooperation of the world’s leading greenhouse gas emitters will be …