In 2021 we also held two webinars looking at the results of our air quality data collection campaign in collaboration with Sierra Club Canada. The first of these featured prominent researcher and University of Toronto professor Dr. Greg Evans, whose research focuses on air pollution and understanding its impacts on human health and the environment. The second featured Dr. Errol Thomson, a Research Scientist with Health Canada and Adjunct Professor at the University of Ottawa, who provided an overview of ongoing research efforts into the health effects of air pollution, including the widespread nature of effects, how pollutant composition (and hence source) matters, and factors that contribute to vulnerability.