When the COVID-19 pandemic took off in 2020, so too did questions over the effectiveness of wearing a face mask to prevent the spread of the virus. Now, four years later, what does the science say? In ...

P95 and N95 are rating classifiers for masks manufactured to keep people from inhaling dust and other small particles in unsafe environments.

After Business Insider first reported on a group of fashion designers who discovered certain blue shop towels filter particles far better than a cotton bandana, one of them was approached by a ...