› added 5 years ago

76

TIL of the Tlatelolco massacre, in which hundreds of demonstrators protesting the 1968 Mexico City Olympics were gunned down.

Read more wikipedia.org

via reddit.com

Z8rao TIL bladeless fans work by squeezing air & accelerating it. Air is forced out through slits, & clings to the curved aerofoil surfaces. This means surrounding air pulled along, too. The air flow becomes about 15 times greater than the air taken in.
1aD6D TIL that Purple Dye in Ancient Times was made by extracting it from a type of Mediterranean sea snail, which made it hard to get lots of, making it by far the most valuable color dye at the time.
kO0r7 TIL that an alligator terrorizing Chicago locals was captured and named Chance the Snapper by the local Herpetological society
Q88X TIL: Lobsters pee out of their face to display their dominance.
7XZO TIL posthumous marriage is legal in France, if one fiancé(e) dies before the wedding. “I do” is replaced with “I did”, and “until death do us part” is omitted.