One common concern about cloth face masks is the level of filtration they provide. The fabric’s mesh is often too open to filter out smaller particles such as smoke, dust, or viruses. A popular ...

BERLIN — As the wave of coronavirus infections broke over Europe in March, causing reserves of medical supplies to disappear, German authorities made a nationwide appeal: More safety masks were ...

Gov. Tom Wolf has now made it mandatory for anyone shopping or working at Pennsylvania grocery stores and pharmacies to wear a face mask. As citizens scramble to find or make their own face masks, ...

In the early 1900s, a housewife named Melitta Bentz changed history when she transformed a piece of paper from her son's notebook into the world's first disposable coffee filter. Today, the Melitta ...

Melitta, the German maker of the original paper coffee filter, retooled its production to make masks. A director called the filter’s perfect fit over the face “a gift from heaven.” Credit...Daniel ...