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TIL That when fluoride was first introduced to American water supplies in the 1940s and 50s it was criticized as a Communist plot to socialize medicine and deplete the brain power of American children.

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xQbk TIL the stated sunscreen SPF values are correct only if 2 μL of sunscreen is applied per square cm of exposed skin. This translates into about 28 mL (1 oz) to cover the whole body of an adult male, which is much more than many people use in practice.
XE06D You hear the phrase all the time when you’re working with computers, especially on customer service calls: “Please reboot your computer.” Why do we use the word reboot to mean “turn it off and on again”? It all goes back to tech history — and to one of the most revolutionary aspects of these computing machines.
rRrwe TIL Mayonnaise is the most frequently purchased condiment in the US, beating ketchup by $1.2 billion annual revenue.
J1nwj TIL That A.I. phone sex is a thing
oRmaY TIL Everybody is allowed to do the Māori Haka dance, but only if done with respect.