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TIL: That in it’s entire deployment history (c 1998), the Challenger 2 tank has suffered no combat losses. And that one tank is reported to have survived 70 RPGs.

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R97a TIL the “W-D” in WD-40 stands for Water Displacement.
x65yw TIL: Your car's VIN (vehicle identification number) shows its country of origin, engine size, model year, vehicle type, trim level and manufacturing factory. The first 3 digits/letters identify the country, positions 4 to 9 describe the vehicle, and 10-17 is the vehicle identifier section.
D4OY TIL that some cultures believed Vampires were arithmomaniacs and if you were being chased you could throw a handful of rice at them to forced the Vampire to stop and count each grain. This could also be the origin of “The Count” from Sesame Street.
BgMEe TIL how a centuries old inscription on a boulder was deciphered by a contest.
8a5WK TIL squirrels are omnivorous and will eat insects and mice.