Five years after Donald Trump declared a national COVID emergency, here's what the research says about face masks.

Fewer people wear face masks than during the Covid-19 pandemic, but they’re still great personal protective equipment to keep at home. They can help prevent illness and protect the people ...

Has your COVID-era mask been a constant companion or is it collecting dust? Americans’ relationship with masking has been fraught (and politicized) since the beginning of the pandemic, a time when ...