PORTLAND, Ore. — With new, more infectious variants of the coronavirus popping up in the U.S., it's more important than ever to not just wear a mask but to wear the right mask. In fact, one expert ...

Every winter, as Delhi’s air thickens with smog, masks return as our go-to protection. They do help filter harmful particulate matter, but poor mask hygiene can ironically do more harm than good. A ...

LOS ANGELES (AP) — A federal judge on Monday blocked a California law from going into effect that would ban federal immigration agents from covering their faces, but they will still be required to ...