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TIL the name of the fighting machine the "Tank" got its name because of subterfuge, as the British wanted to pass them off as water tanks bound for Russia.

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Br8RW TIL a C-130 holds the record for the largest and heaviest plane to land on an aircraft carrier. In 1963 it made 29 touch-and-gos, 21 takeoffs and 21 full stop landings all without a catapult or tail hooks!
ANLXa TIL of sky burial, a funeral practice in which a corpse is placed on a mountaintop and left to decompose or be eaten by vultures.
GYKG7 TIL Apollo-11 trajectory to the Moon is named "Kondratyuk Route" after a self-educated Ukrainian who had calculated it 50 years before the lunar flight
6PeQ TIL that not swinging your arms when you walk increases the effort of walking by 12%, the equivalent of walking 20% faster or carrying a 10 kg backpack.
WjYL TIL: The air in Beijing is so polluted that breathing it does as much damage to the lungs as smoking 40 cigarettes a day.