Masks Technology:
N95 respirators
or details of test of the US code of federal regulations:
https://www.ecfr.gov/cgi-bin/text-idx?SID=7df27db9d50832b57f37dc711b21f9e6&mc=true&node=pt42.1.84&rgn=div5
Airborne COVID-19 Updates:
Kenneth Feder has a book that covers similar stuff. It's a fun read. https://en.wikipedia.org/wiki/Frauds,_Myths,_and_Mysteries
Hey Tobin. Yes! Feder's book is wonderful--I actually used it to teach a course at another university before coming to AU.
Here's another good article: https://www.google.ca/amp/s/www.forbes.com/sites/kristinakillgrove/2015/09/03/what-archaeologists-really-think-about-ancient-aliens-lost-colonies-and-fingerprints-of-the-gods/amp/
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