KGO ABC World News Tonight With David Muir September 16, 2020 00:51:00
Mask in the fight against covid-19. abc news teaming up with engineers at florida atlantic university to show where particles can escape. the demonstration showing that masks with that metal strip, sealing the nose area, released far fewer particles. n-95 masks offering the best protection. half masking, when the mask sits under your nose, was, of course, least effective. when we come back, the first image and a message from vladimir putin's foe from his hospital bed. which is why it's good to know exactly how you'll get there. for more than 150 years, generations have trusted the strength a...
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