Researchers Put Cloth Face Masks Under a Microscope. The Images Are Out of This World

Cloth face masks have become part of the daily routine for many of us. The first thing I did at the beginning of the pandemic last year was buy some cloth face masks for my mom, who is 68 years old and has delicate health. Nearly a year after that purchase, my mom is vaccinated, but she still wears her cloth face mask…

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