Researchers have developed a method to assess the efficacy of anti-particle filters and masks. This method will help to decide the most suitable system depending on the professional activity. Thanks ...

This story is no longer being updated. Please visit kqed.org/wildfires for our latest wildfire-related stories and guides. These masks are used widely outside our ...

(KPIX 5) -- People have been lining up at hardware stores and other locations in the Bay Area to snap up face masks to minimize their intake of unhealthy air. But the N95 respirators, so called ...

With 80 percent face mask compliance, we could beat the coronavirus in no time flat — but now that mask wearing has become so politicized, it’s probably impossible to reach that number. Still, making ...

SAN FRANCISCO (KGO) -- N95 masks were considered the standard when it came to preventing the inhalation of wildfire smoke over the past few years. Now there are concerns they may not be as effective.

One common concern about cloth face masks is the level of filtration they provide. The fabric’s mesh is often too open to filter out smaller particles such as smoke, dust, or viruses. A popular ...