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171

TIL that Swallowtail Butterflies have eyes on their genitals

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JYV6v TIL 10 Downing Street is not the residence of the UK Prime Minister, but of the First Lord of the Treasury, an office which is held concurrently with that of Prime Minister.
vP8px TIL: Usain Bolt's world record in the 100 meter sprint has stood for 15 years, which is longer than anyone has held the record in history.
5VVDr TIL that in 1961, Thomas Monaghan got half-ownership of "Domino's", now one of the largest pizza companies in the world. All he had to give in return was his used Volkswagen Beetle car.
pY1k4 TIL fist pumping before a blood test can lead to falsely elevated potassium results.
0d4D5 TIL that wearing a tie can reduce blood flow to the brain by 7.5 per cent.