This is the updated science on masks. How many droplets do they stop? What are the best kinds? How can you test them yourselves.
What Did We Learn This Week?:
2:00 - the history of breathing
8:30 - why are some people more sensitive to pain?
STUDYTIME:
12:20 - EVERYTHING YOU NEED TO KNOW ABOUT MASKS!
Hosted on Acast. See acast.com/privacy) for more information.
