How to Wear Surgical Mask Properly? Blue or White on Outside?
Surgical masks are designed to be worn in one dire …
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How to wear a surgical mask to capture viruses? Should the blue side be in or out?
Since COVID-19 started, there has been confusion o …
Common UV Lights Aren’t Great at Killing COVID-19
UV light has surfaced as a potential solution for …
COVID-19 Lockdown Leads to PM2.5 Reductions in 11 Out of 12 of China’s Major Cities.
The lockdown caused by the COVID-19 epidemic saw t …
