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TIL the little loops on the back of men's dress shirts have an official name and use. They're called 'locker loops' and were earlier made on sailors' shirts so they could hang their shirts anywhere on hooks on their ship. Universities later followed to keep their button down uniforms wrinkle-free.

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AlMB TIL that Newgrange is a 5,000-year-old tomb and time-telling device. At dawn from Dec. 19th-23rd, a narrow beam of light penetrates the passage chamber and the entire room becomes dramatically illuminated for just 17 minutes. There is a lottery to determine the few witnesses of the event each year.
GYZDE TIL in the aftermath of Katrina, Mexico deployed 184 personnel to aid relief,including handing out 100,000+ meals and supplies. This was the first flagged and uniformed deployment of Mexican military personnel in the USA in 150 years.
axQJ TIL when Astronaut Ed Mitchell was asked what it’s like to stand on the moon, he said: “From out there on the moon, international politics look so petty. You want to grab a politician by the scruff of the neck and drag him a quarter of a million miles out and say, ‘Look at that, you son of a bitch.’
8ayg4 TIL that in 1973, Utah made sex outside of marriage illegal. The law wasn’t taken down until March of 2019
R7jdw TIL coins like pennies actually have no odor. Metals such as iron & copper catalyze a chemical reaction in skin oils which produces the source of the "metal smell", a compound called 1-octen-3-one, and every person's smell is slightly different.