Need a weatherman

ROW after giant row of wind turbines marches towards the snowy peaks of the Tian Shan range, harvesting energy from the air. On a blustery July day in Xinjiang in China’s far west, it is hard to stand upright beside the structures, each 90m (nearly 300 feet) high. China is better known as a land of coal and smog, but it is now increasing the generation of electricity from renewable sources faster than any other country, with more than 100 gigawatts a year of installed generating capacity from wind, a third of the world’s total (see chart). In future, wind power will be a vital source of renewable energy. If it can integrate large-scale wind generation into its electricity network, China will be an example for other countries.