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 ...

As multiple wildfires burn in Canada and Minnesota, millions of people are being exposed to hazardous levels of air pollution. “Smoke carries a lot of particulates, and they can range in size,” says ...

Scientists have developed an air filter that recharges using sunlight or indoor LED lighting, offering what they say could be a cheaper, lower-maintenance alternative to standard purification systems, ...

Add Yahoo as a preferred source to see more of our stories on Google. Whether you're biding your time on the Happy Masks waitlist or you spring for another brand, KN95 and Nanofilter masks provide ...

Well, the haze is back. And in full force. But does that mean you need to reach for an N95 mask whenever you head outdoors?