Wall Street Journal: There’s a new parlor game in Washington these days: Trying to figure out how the U.S. and China can work together to tackle climate change. The Senate Foreign Relations Committee hosted the latest round today, as resident China optimist John Kerry called in a slate of heavyweights to explain just how important it is to get China on board and just how difficult that is going to be. The testimony–from the Carnegie Institute’s Bill Chandler, the Council on Foreign Relations’ …