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TIL Hong Kong has a color-coded warning system for rain

Read more hko.gov.hk

via reddit.com

BgbLd TIL in 1983 Albert Rizzo set the WR for the longest time treading water at 108 hours. He performed the feat in the sea at Gżira in Malta, eating only liquid food. He extended his record to 132 hours in 1984 before the Guinness Book of Records stopped monitoring the record in 1986 due to its danger.
16DKV TIL that a chapter in Euclid's geometry received the name of "Bridge of Asses" - Pons Asorum - as it was the first challenging derivation of the book and would serve to separate capable and incapable reasoners
Vx10 TIL while in middle-school, Bill Gates and Paul Allen had their computer privileges revoked for taking advantage of software glitches to obtain free computer time from the company that provided the computers. They were allowed back in the computer lab when they offered to debug the program.
pY5GN TIL The average IQ difference between a parent and child is the same as the difference between siblings, about 12 IQ points. A parent with a high IQ will usually, but not always, have children whose IQs are somewhat lower than theirs but are still above the average for the general population
epp16 TIL healthy male chimpanzees can be as little as 0.002% bodyfat. Females range from less than 1% to 8%.