If air purifiers are sold out or out of your budget, a simple air filter taped to a box fan can filter harmful particulate matter and keep it out of your lungs and bloodstream. Here’s what you ...

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 do ...

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 ...

A 10-year-old girl who built a low-tech, DIY air purifier met with researchers from the University of Connecticut for advanced biochamber testing at the Environmental Protection Agency's lab in RTP.

Smoke is expected to linger in the Bay Area until Friday at the earliest. Here’s what you need to know before you take the box fan and air filter approach.

Social media users are sharing a surprisingly effective way to protect yourself indoors from the toxic wildfire smoke: a box fan, four air filters and a whole lot of duct tape.

This air purifier can be made in 20 minutes and test suggests it's highly effective at removing virus-laden particles from the air.

If your area has already been hit by air purifier shortages, you can make your own with cheap and readily available materials.

But by the sheer science of it, the filter-and-fan combination does fulfill the basic definition of an air purifier—pulling air through one or more filters.

They’re called Corsi-Rosenthal Boxes, a DIY air purifier that was first conceived of in the summer of 2020 by two air filtration experts, Richard Corsi and Jim Rosenthal.