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TIL - The atomic bomb dropped on Hiroshima killed 135,000 people

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16wrP TIL The Big Ben's unique tone is because the bell had cracked in 1859, barely two months after its inauguration. The bell is since oriented in such a way the hammer doesn't strike the 'crack'
wLWNJ TIL Flamingo knees do not bend backwards. What we think of as their "knee" is actually the ankle joint. The knees are located further up the leg, hidden by the body and feathers.
8e4RL TIL In 1945 a mix of American soldiers and Filipino guerillas attacked a POW camp behind Japanese lines, an American fighter flew over the camp making noise to distract the guards, in the end the Japanese lost hundreds to only two allied deaths and over 500 prisoners were rescued.
P1b0G TIL that researchers believe that up to 65% of people with Klinefelter syndrome (XXY chromosomes) are never diagnosed. The condition usually isn't diagnosed until puberty or adulthood because of how mild the symptoms are.
4XXE6 TIL that in 1980, Ronald Graham offered a prize of $100 for anyone who could solve his "Boolean Pythagorean Triples Problem." Last year, three computer scientists solved the puzzle, using a supercomputer over the course of 2 days, and came out with a proof that takes up 200TB of storage space.