According to a report published by Greenpeace and Peking University’s School of Public Health in December 2012, the coal industry is responsible for the highest levels of air pollution (19 percent), followed by vehicle emissions (6 percent).
根据绿色和平组织和北京大学公共卫生学院2012年12月发表的报告，煤炭行业造成的空气污染最高，占19%，其次才是车辆尾气排放（6%）。