Politicians argue. Those opposed to mask mandates protest. But meanwhile, growing evidence shows that mask wearing is a critical tool in curbing the spread of the coronavirus.
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Yes, Wearing Masks Helps. Here's Why
Corrected: June 20, 2020 at 10:00 PM MDT
An earlier version of this story mistakenly said the Cell study was published last week; it was published in late May. And an earlier version incorrectly said the study from Proceedings of the Royal Society A was published last week; it was published earlier in June. And BMJ Global Health was misstated as BMJ.
