A new study of COVID-19 shutdowns in the United States reveals pronounced disparities in air pollution—with disenfranchised, minority neighborhoods still experiencing more exposure to a harmful air pollutant compared to wealthier, white communities. This first-of-a-kind study published today by researchers at the George Washington University looks at how air pollution changed after schools and businesses shut down in March 2020 in attempts to curb the spread of COVID-19.