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TIL Warsaw, Poland uses 8 clams to detect the purity of the drinking water. If 6 or more clams suddenly close their shells for at least 4 minutes, it sets off an alarm that toxins have been detected.

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kODeg TIL when the Miami Marlins built their new stadium, they consulted NASA to make sure no one could hit a home run more than 500 feet. Aaron Judge hit one 513 feet at the Home Run Derby in 2017.
J19pj TIL English-speaking officials in Wales put up a bilingual sign reading "No entry for heavy goods vehicles. Residential site only", but the Welsh part translated to "I am not in the office at the moment. Send any work to be translated"... which was just the email response from their translator.
PYnZn TIL a German student was sued for $3,772 by his alma mater for earning his bachelor's and master's "too fast". Both degrees usually take 11 semesters, but Marcel Pohl graduated in 2; he went to one class while having 2 friends share notes from other classes he was enrolled in at the same time.
dDLOr TIL In the 1980s, tobacco giants Philip Morris and R.J. Reynolds acquired the major food companies Kraft, General Foods and Nabisco, allowing tobacco firms to dominate America’s food supply and reap billions in sales from popular brands such as Oreo cookies, Kraft Macaroni & Cheese and Lunchables
KYQJ TIL Einstein proposed in an inch long equation: “Gravity” doesn’t pull, instead space pushes. “Gravity” is only the apparent effect of the bends in space. G = 8 π T