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 ...

NEW YORK (AP) — 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 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 ...

New York City has the worst air quality in the world right now due to smoke from Canadian wildfires. The NYC Department of Health told residents to use an air purifier indoors if possible. The EPA ...

After wildfire smoke and the COVID-19 pandemic caused a surge in demand for air purifiers, which can be expensive or out-of-stock, the “Corsi-Rosenthal” box was born. The simple, inexpensive device is ...

A filter crafted with common hardware store supplies outperformed pricey off-the-shelf air filters in tests performed at an advanced EPA chamber that simulates real-world conditions, a recent study ...