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TIL that Joan of Arc’s companion was a paedophilic serial killer whose victim count was in the 800s

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jN57X TIL Scientists in China have successfully grown tooth enamel which paves the way to replace fillings & crowns. A chemical mixture applied to whole human teeth created an enamel layer 2.7 micrometers thick within 48 hours. (Calcium & phosphate ions with triethylamine in alcohol).
4XRE5 TIL That Phillips screws and screwdrivers should be called Thompsons. They were invented by John P. Thompson, who couldn't find a manufacturer and so sold the design to businessman Henry F. Phillips.
x6J9o TIL a county in Missouri in 1838 held a ballot measure on whether Mormons should be allowed to settle in the county; a heavy majority favored the expulsion of the Mormons. When they refused to leave, Mormon settlements were sieged by vigilantes, triggering the Missouri Mormon War
k8wm TIL that smokers actually cost society LESS in healthcare dollars, due to earlier average age of death.
Zp8kD TIL the British painted their cows with stripes during WWII to avoid car accidents during blackouts