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TIL that the common belief that a scorpion surrounded by fire will sting itself to death is untrue. When exposed to rapid heat, the nervous system spasms uncontrollably, leading to what looks like the scorpion stinging itself.

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7rb7x TIL of Primate Cities, which are cities that are dominant in their country/subdivision in such a way that it is the centre of said country/subdivision (e.g. New York City in the state of New York)
0wLx1 TIL, Saint Edith Stein was a Jewish convert to Roman Catholicism. In 1942, she became a prisoner of the Nazis. A dutch official offered her escape from Auschwitz but she refused, preferring to "share in the fate of her brothers and sisters".
R7RW6 TIL: When Richard Dawkins originally coined the term, a "meme" was a basic elements of culture just as a gene is the basic component of genetics.
QJgMM TIL F-117 Nighthawks are stored in Type 1000 storage which requires them to be flown every 4 years and maintained until recalled for active service again.
X0OOD TIL : Xylitol, a common sweetener added to many foods, gums and toothpastes is extremely toxic to dogs, causing a rapid release of insulin, seizures and eventually liver failure.