What is the best mask for COVID-19? A mechanical engineer explains the science after 2 years of testing masks in his lab
- Written by Christian L'Orange, Assistant Research Professor of Mechanical Engineering, Colorado State University
Not all masks offer the same level of protection for you and those around you.Martin Barth/EyeEm via Getty ImagesThe Centers for Disease Control and Prevention has changed its guidelines about masks and respirators a number of times over the past two years and gave its most recent update on Jan. 14, 2022. The update states that cloth face...