China, U.S. work on clean energy cooperation at bilateral forum in Denver

U.S. Department of Energy (DOE) Acting Assistant Secretary Daniel Simmons delivers a speech during the 8th U.S.-China Energy Efficiency Forum in Denver, the United States, Oct. 13, 2017. Denver city officials welcomed Chinese government and energy leaders with open arms Friday as the city hosted the bilateral Energy Efficiency Forum (EEF) for the first time. (Xinhua/Guo Shuang)