"Using an in-home HEPA purifier for one month spurs a small but significant improvement in brain function in adults age 40 and older."Gosh, that sounds like the sort of thing it would be good to install in indoor workplaces.https://www.sciencealert.com/air-purifiers-could-boost-your-brain-function-study-suggests#AirPurifiers #CovidIsNotOver #PandemicIsNotOver #AirQuality #PublicHealth #Brain #Cognitive