In some states and major cities, it’s now mandatory to wear a mask in public to prevent the spread of COVID-19. That mask could be anything from a handkerchief to a designer cotton mask to a ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Follow all of PopSci’s COVID-19 coverage here, including tips on ...

Corrections & Clarifications: A previous version of this article incorrectly spelled the name of Dr. Kristine Romine. Masks mandates are in place in cities across Arizona, and these mandates are ...

Preoxygenation with a bag-valve-mask device did not reduce the risk for hypoxemia compared with preoxygenation with a face mask during emergency tracheal intubation in the emergency department (ED) or ...

A new study using lasers suggests that face shields and masks outfitted with an exhaust valve aren’t particularly great at protecting others from tiny respiratory droplets containing contagious germs ...

WASHINGTON, November 10, 2020 -- If you have seen someone wandering around the grocery store or elsewhere with a mask with a valve on it and wondered how safe it is for you, you were right to be ...

Mask valves might make you breathe a little easier, but when it comes to fighting COVID, wearing one is a bad move. (Unsplash/) When shopping for face masks to prevent the spread of COVID-19, you ...