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 ...

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 ...

A new low-cost DIY box filter is "highly effective" in clearing the air of hazardous indoor pollutants, according to a study. Filter-based air cleaners have become popular since the COVID-19 pandemic, ...

With wildfire smoke blanketing much of the upper U.S., Americans searching for a way to avoid the toxic air can turn to a DIY air purifier with Cowtown roots. Canadian wildfires have brought three ...