This is a developing story. For the latest local updates head to LAist.com and sign up for breaking news alerts. Interest in air filters and purifiers is spiking in Southern California, including ...

That "HEPA" label on your air purifier might not mean what you think it does, and the difference actually matters.

Building a Corsi-Rosenthal box portable air filter comes down to duct-taping together a set of furnace filters and a box fan. Douglas Hannah, CC BY-ND One afternoon, a dozen Arizona State University ...

One afternoon, a dozen Arizona State University students gathered to spend the morning cutting cardboard, taping fans, and assembling filters in an effort to build 125 portable air purifiers for local ...

The U.S. Environmental Protection Agency has verified that a do-it-yourself indoor air filter is 99% effective in removing airborne viruses, including COVID-19 and RSV. The “Owl Force One” device was ...

An old axiom reminds us that an ounce of prevention is worth a pound of cure. Here's how top technicians apply that sentiment to routine air filter replacements. The savvier techs I work with employ a ...

New York, and other major cities on the eastern seaboard are currently blanketed in smoke from a massive outbreak of wildfires in Canada. Air quality levels are reaching their worst ever recorded ...

Searches spike 400%, shelves empty in days, and most buyers still bring home the wrong air purifier.

Covid is not going away for the foreseeable future. Vaccination, rapid tests and appropriate masking are important ways to protect against getting sick and spreading the virus. So is better indoor air ...

Eric Schildge is terrified to go back to school in a few weeks. An 8th grade English teacher in Newburyport, the fear of in-person learning during a pandemic is familiar to him. He was in the ...