PORTLAND, Ore. — Search YouTube, you'll find all sorts of creative, and pretty impressive videos on how to make a face mask out of a coffee filter. It makes sense. It is a filter. But just how ...
CAMBRIDGE, MASS. (WHDH) - Researchers at MIT are developing new masks to prevent the spread of COVID-19, using battery-powered heat and removable filters to stop the virus. Assistant Professor Dr.
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