To help contain COVID-19, one of the most important things you can do is wear a mask. Especially when paired with physical distancing, wearing masks is “the single best way, short of a lockdown, to ...

We're basically used to wearing face coverings while out and about at this point, and you may have noticed that several masks have a small slot to place a filter for extra protection. Adding a filter ...

Coronaviruses, like other viruses, are tiny — far too small to get caught in most textiles. To prevent them penetrating a mask filter, engineers have to use various physical tricks. Whenever several ...