A major research theme in AIRFlowS Lab is to improve understanding of the processes behind emission, transport, and fate of pollutants (including chemicals, pathogens, allergens, and toxins) in the atmosphere. We adopt a highly interdisciplinary approach integrating the knowledge of fluid dynamics, atmospheric and air quality science, computational science, and aerosol science to ultimately benefit the environment and human health. Using a synergistic blend of numerical simulations, theory, laboratory experiments, and observations, the goal of AIRFlowS Lab is to answer scientific questions, such as: 1) What environmental factors govern the emissions of pollutants, including aerosols and gases, into atmosphere? 2) What pathways do air pollutants take after emissions? 3) What are the implications of air pollutants on the environment, ecosystem, and human health?