What's the Best Material for a Mask for Coronavirus? - The New York Times

Upgrade Your Face Mask: 5 Ways To Filter Out More Particles : Shots - Health News : NPR

Study Indicates That Humidity in Breath Makes Cotton Masks More Effective at Slowing the Spread of COVID-19

How Long You Can Wear Your N95, KN95 and KF94 Face Masks - The New York Times

Can Face Masks Prevent Coronavirus? Here's What Medical Experts Say : Goats and Soda : NPR

Face Masks Really Do Matter. The Scientific Evidence Is Growing. - WSJ

When and Why to Wear a Mask

Coronavirus: Which Mask Should You Wear? - The New York Times

Opinion Coronavirus Advice: Wear a Mask. Here's How. - The New York Times

Microstructure analysis and image-based modelling of face masks for COVID-19 virus protection

Cloth Face Masks Could Get A Boost From A Nylon Stocking Layer, Study Finds : Goats and Soda : NPR