The rule isn't foolproof, but it should help weed out masks that aren't very protective. The Centers for Disease Control and Prevention recommends multi-layer cloth masks for the general public.

Chinese developers have introduced an innovative device—a face mask capable of dynamically altering a person's appearance, ...

One way to minimize your risk of exposure is to wear a mask, but there's a lot to consider when picking the right covering. Read on for tips about what to look for in a face covering, as well as ...