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TIL that ultrasound, thought to lie outside of the human hearing range, can be detected by listeners when it is played in combination with sound in the audible range. The mechanism for this is unknown, but in June 2000, researchers verified it by using brain activity scans.

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l7LB1 TIL the current Spanish-language World Champion for Scrabble has previously also won the French-language and English-language championships. A New Zealander, he only speaks English.
9Yg47 TIL When CIA raided Usama Bin Ladin’s compound in Abbottabad they found "Batman Gotham Knight", "Ice Age: Dawn of the Dinosaurs", "Resident Evil" and many other videos.
QJpRe TIL that consuming too much lean protein can cause symptoms similar to broad malnutrition in a condition known as protein poisoning, or more colloquially called "rabbit poisoning" due to the first observed cases in frontiersmen who ate nothing but wild rabbits over the winter and developed symptoms.
EgZDP TIL San Francisco allows people to park in the middle of the road ("the median") on Sundays on certain streets. For many years, law enforcement gave the blind eye to the practice in the name of ‘parking for God’ so people can go to church, it became permissible by law officially in 2018.
lQ7r TIL In 1903, a barge tipped somewhere off the coast of Staten Island, sending most of its 7,700 silver-and-lead bars to the bottom. Most bars were recovered right away, but some 1,400 bars, valued at up to $20 million today were never found.