Posted May 27th, 2021 by Phill Snel Prof. Jeffrey Siegel | Caution to the Wind: Desperate to reopen and loaded with stimulus cash, schools are spending millions on high-tech purifiers. But are they safe? May 27, 2021 | Mother Jones Posted in In the News | Tags: classrooms, HEPA filter, indoor air quality, Jeffrey Siegel, reopening, schools, Students
