Every day, N95, KN95, KF94, and surgical face masks protect millions of people from smoke, dust, and other particulates, as well as germs that can cause serious illness. These masks act like a bouncer ...

South Korea's KF94 mask does a good job concealing the Mona Lisa's smile — but how effective is it at preventing coronavirus spread? Here, masked pedestrians stroll through a shopping district in ...

Sadly, we are still very much in a pandemic, with new variants cropping up regularly. And while the best thing you can do to protect yourself and those around you is to get vaccinated and boosted, the ...