A research team led by Prof. Shen Yan'an from the University of Science and Technology of China (USTC) has made significant progress in studying the sources and formation mechanisms of haze. Through coal combustion experiments and high-precision sulfur isotope analysis, the researchers drew the conclusion that particulate matter from coal combustion is one of the main sources of haze in North China. The findings were published online in Proceedings of the National Academy of Sciences on December 10.
