Richard Corsi demonstrates the airflow of a low-cost, DIY air cleaner that can remove indoor pollutants such as smoke particles and respiratory particles. It may also reduce the spread of airborne ...

Even so, research shows the Corsi-Rosenthal Box performs better than other, more expensive air purifiers. MERV-13 filters have a lower filtration efficiency than HEPA filters, but the box makes up for ...

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 ...

HEPA filters have become an increasingly common option in smart homes for those who really, really want to make sure they’re removing every bit of allergen or potential infectious particle. Often ...

PROVIDENCE, R.I. (WPRI) — Providence Schools will soon be replacing the box fans that are currently in some classrooms to improve air circulation with HEPA filters. In a recent tweet, the school ...

Correction: (March 25, 2025) In the thirteenth paragraph, “within 3 to 4 feet (91 to 120 centimeters)” should be “within 8 feet (244 centimeters).” An edit has been made in the press release to ...