With the reddish-orange skies and smoke-filled air, Californians who had previously never heard of PM2.5 pollution are quickly learning about the Air Quality Index and what they need to do to protect ...

A cheap, do-it-yourself air purifier is powerful enough to effectively protect a home from free-floating flu and COVID-19 viruses, according to test results from the U.S. Environmental Protection ...

The Corsi-Rosenthal box, invented by Richard Corsi and Jim Rosenthal, is an effective air purification system that can help remove droplets containing viruses in them from the air by sucking air into ...

With allergens, disease, odors, and dust building up over the winter months, there are many reasons to consider an air purifier for your home. While there are impressive air purifiers you can buy with ...

Air quality can be impacted by smoke from wildfires. Our reporter set out to build an air filter — in a style the EPA praised, using only things she already had at home. It's almost summer, and if ...