The arguments against mask mandates are plentiful. Those opposed to the public-health measure say it restricts people’s freedom, represents government intrusion and — falsely — that it distorts ...

This summer, as Americans return to beach towns hit hard by the coronavirus pandemic, the highly contagious delta variant threatens to upend vacation plans. Some states have reinstituted COVID-19 ...

Studying fabrics at very high magnification helps determine how some face masks filter out particles better than others. And the close-ups reveal an unseen beauty of the mundane objects that have now ...