DABANCHENG, CHINA - SEPTEMBER 2: (CHINA OUT) A worker sweeps a road near wind turbines at the Dafancheng Wind Power Plant, the largest of its kind in Aisa, on September 2, 2007 in Dafancheng of Xinjiang Uygur Autonomous Region, China. Xinjiang is rich in wind resources and its installed capacity of wind generators is over 180,000 kilowatts. Xinjiang has been noted in ancient times along the old silk road as a political and commercial centre. It is the hub of an important commercial region, bordering Russia, Afghanistan, Kazakhstan, Tajikistan, Kyrgyzstan and Uzbekistan with Pakistan to its south. (Photo by China Photos/Getty Images)