Cloth face coverings may help curb COVID-19 transmission because presymptomatic and asymptomatic people can transmit SARS-CoV-2. Wearing a mask helps contain respiratory droplets from talking, ...
Four years ago, long before the pandemic made masks ubiquitous, a U.K.-based startup called Masuku began developing a better face mask to help filter out pollution in smoggy cities. Masks on the ...
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