There's one thing you should know before diving into the conversation around masks: The public should not purchase surgical masks or N95 respirators. Health care workers are facing shortages and need ...

SAN FRANCISCO (KGO) -- University of San Francisco researcher and data scientist Jeremy Howard has been at the forefront of urging everyone to wear masks in public and urging lawmakers to mandate mask ...

There are different kinds of microphones, but they all do about the same thing, which is to turn acoustic sounds into electronic signals that can be amplified, modified, or recorded. When you speak ...