During the first COVID-19 lockdown in India, air pollution levels changed dramatically. York University researchers Dr. Leigh Crilley (postdoctoral researcher), Yashar Ebrahimi-Iranpour (undergraduate researcher), and Prof. Cora Young found that while some air pollutants decreased, others increased. Their work was featured in a recent episode of CBC’s The Nature of Things. The paper, Importance of meteorology and chemistry in determining air pollutant levels during COVID-19 lockdown in Indian cities, was published in the journal Environmental Science: Processes & Impacts. A story about the study was also featured by Y-file.