For decades, U.S. military leaders have prohibited service members from growing beards, arguing that facial hair not only disrupts a clean, professional appearance, but also interferes with the seal ...

Please provide your email address to receive an email when new articles are posted on . Nearly 100% of N95 masks pass fit tests after 3 years, suggesting annual tests are not necessary. Moving to ...

Researchers have tested a variety of popular hacks for improving the fit of KN95 and surgical masks, and found that while some hacks do improve fit, they can also come at the cost of the wearer's ...