TORONTO — This fall, teachers and parents have been sharing photos on social media of do-it-yourself air purifiers that they’ve made for classrooms to help protect kids from COVID-19 transmission. But ...

MIDDLETOWN — Fifth-graders enrolled in an elementary school’s STEM Academy are eagerly awaiting the results of testing conducted by the U.S. Environmental Protection Agency to see if their ...

No, I don't mean a box fan with a crap filter in front of it. I'm thinking about something more substantial with a MERV16 filter. I've got two applications in mind, household dust in my master bedroom ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. NEW YORK (AP) — Social media users are ...