https://www.sciencedaily.com/releases/2020/12/201221160416.htm > The researchers leveraged the unintended "natural experiment" of cleaner air in New York City during the COVID-19 shutdown to simulate the potential future health and economic benefits from sustained air quality improvements of a similar magnitude. They do not frame this study as an estimate of the benefits of the pandemic. Rather they offer this hypothetical clean air scenario as an aspirational goal for policies to reduce emissions, largely from fossil fuel combustion. > Exploratory analyses found that neighborhoods with higher percentages of low-income residents or higher percentages of Black or Latinx residents tended to have proportionally higher benefits from reduced PM2.5 concentrations when compared to neighborhoods with lower levels of poverty or Black or Latinx populations. However, this does not mean that the disparity in health outcomes across neighborhoods would be eliminated under this scenario because underlying risk factors would still remain. The researchers also caution that limited air quality monitors and available data during the shutdown period constrained their ability to assess the impact of improved air quality on health disparities across neighborhoods.