Agence France-Presse: China could meet all of its future electricity needs with wind power if the government continues to subsidize the development of wind farms with price guarantees, a study published Thursday has found. Already the world’s largest emitter of carbon dioxide, China’s electricity needs are expected to double in the next two decades and it is currently adding several new coal-fired power plants to its grid every week. “The real question for the globe is: What alternatives does China …