South Asia satellite data (IMAGE) Washington University in St. Louis Caption Researchers working with Randall Martin at Washington University in St. Louis used satellite remote sensing and advanced modeling techniques to evaluate atmospheric composition and assess sources of fine particulate matter across South Asia. Credit Martin lab, Washington University in St. Louis Usage Restrictions For editorial purposes 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.