(IMAGE) Hong Kong University of Science and Technology Caption Prof. WANG Zhe (third right) and the co-researchers at the Supersite Air Quality Monitoring Station of the Environmental Protection Department, where they conducted the study. Taken before the pandemic. Credit HKUST Usage Restrictions N/A License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.