Designed by engineers Richard Corsi and Jim Rosenthal during the COVID-19 pandemic, the Corsi-Rosenthal box can be built for about a quarter of the cost of some commercial air purifiers, and can help ...
NEW YORK — Social media users are sharing a surprisingly effective way to protect yourself indoors from the toxic wildfire smoke blanketing much of the East Coast: a box fan, four air filters and a ...
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