Rajasekhar Balasubramanian has broad teaching and research interests that cut across environmental sustainability, climate change, and urban air quality. He has helped establish the Environmental Engineering educational program offered by NUS. The main goal of his interdisciplinary research is to advance understanding of environmental and health impacts of air pollution on scales ranging from local to global, and to develop cost-effective technologies and formulate regulatory strategies to mitigate these impacts. He is currently the principal investigator of a multi-national research project that provides new insights into the health impacts of airborne particulate matter and technological solutions to mitigate such impacts.