Mary Johnson recently joined the Harvard School of Public Health as a principal research scientist. Prior she was the Director of Air Pollution and Health Research at the Sean Parker Center for Asthma and Allergy Research at Stanford University.  She received her PhD from Northwestern University and her MD from Southern Illinois University.  She leads studies which investigate the impact of air pollution and wildfires on immune health in the context of climate change.  Her goal is to use the research findings to both educate and shape policy for the benefit of generations to come.