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TIL that during sleep cerebral spinal fluid flows through the brain on the OUTSIDE of the brain’s blood vessels and that the CSF removes brain cell waste including amyloid beta protein. This flow only occurs during sleep. Amyloid beta protein buildup is involved in alzheimer’s.

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EgMeo TIL a Harvard study found that hiring one highly productive ‘toxic worker’ does more damage to a company’s bottom line than employing several less productive, but more cooperative, workers.
8mZb TIL that the word “lethologica” describes the state of not being able to remember the word you want.
nep7b TIL: Before the invention of toothbrushes, Europeans cleaned their teeth with rags rolled in salt or soot while Indians and Africans chewed on sticks from the Salvadora tree.
xVeJ7 TIL That in 1837, The Speaker of the House of the Arkansas General Assembly Killed another Sate Representative with a Knife Right on the Floor of the General Assembly. They were arguing over a bill about wolf pelts. The killer won at trial and was never punished.
PYE6J TIL that to lower the cost of the car and make it more affordable to Americans, Henry Ford took note of the work of efficiency experts like Frederick Taylor, the “father of scientific management”, resulting in a assembly line that reduced the time for car manufacturing, from 12 hours to 93 minutes