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TIL that the first nuclear submarine used wooden bearings for its propeller; Lignum Vitae is the hardest traded wood, fourth hardest wood ever discovered, and is "self oiling".

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E1ZpW TIL the idea for the Tenacious D song "Tribute" came about after Jack Black showed Kyle Gass the Metallica song "One" and claimed it was the best song in the world.
QJLNe TIL Ted Kennedy crashed a car into water and fled the scene as his passenger died. He only received two months' probation.
5Yy99 TIL about the Tanuki, a Japanese folklore creature that is referred to as the Raccoon Dog. Its most distinguishing characteristic is their large, magical pair of testicles that it used as a hat, umbrella, boat or drum. They are known as tricksters or bringers of good luck.
vPyPD TIL there are only 14 possible (Gregorian) Calendars but it takes 26 years to cycle through them. If you start with 9 different consecutive calendars it takes another 17 years to “collect” the other 5.
5YERk TIL that Scajaquada Creek, a waterway in Western New York, runs through a six mile long tunnel beneath the city of Buffalo, NY