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TIL the use of bowls to house goldfish comes from a misunderstanding of Chinese display vessels--small, temporary containers to show guests goldfish that were otherwise housed in ponds. Fishbowls are so detrimental to goldfish health that they are prohibited by places like Rome for animal cruelty.

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xYL5 TIL the Energizer Bunny ad campaign did not lead to increased sales. In fact, Energizer’s sales fell. It is speculated consumers associated the bunny with Duracell batteries and purchased them instead.
grnkA TIL there is an IQ floor (80 points) to serve in the US Armed Forces and this requirement was relaxed during the Vietnam war. These people died at 5 times the rate of other Americans in the war.
BjRd TIL According to psychologist Arthur Aron, there are 36 questions that could lead to love. Each question is more probing than the previous one and leads to a mutual vulnerability that fosters closeness. The final exercise is to stare into each other’s eyes for 4 minutes.
NLxJ TIL that since Ronald Reagan, each outgoing United States president has left a private message on the Oval Office desk for the incoming president on Inauguration Day.
yVva8 TIL about Devil's Night, a name that is associated with the serious vandalism and arson seen in Detroit, Michigan. During the height of the drug era, Detroit residents routinely set fire to houses that were known as popular drug-dealing locations. Five thousand of these buildings were razed in 1989.