A worker moves coal briquettes onto a pedicab at a coal distribution business in Huaibei, central China's Anhui province on January 30, 2013. Environmental concerns -- particularly over the use of coal -- have been pushed to the top of the agenda after much of the country was covered with a blanket of pollution this past month. The air quality index (AQI) from the Beijing Municipal Environmental Monitoring Centre reached 993 during the worst of the pollution, almost 40 times the World Health Organisation's recommended safe limit. CHINA