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TIL in North Korea the trucks are powered by burning wood.

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VMl90 TIL only one firefighter actually got up to the fire in WTC on 9/11 by fixing an elevator himself to 40th floor and then running all the way up to 78th floor.
oBVDr TIL about Polyphonic Singing (ie, singing two or more different notes at the same time)
0wnmR TIL the popular door knock "dah dah dah dah dah...dah dah" is know as the "Shave and a Haircut" and was used by POWs during the vietnam war to identify new US prisoners. They would tap the first five notes, and wait for the last two notes in response
JQxv TIL The bald guy the Joker threatened in The Dark Knight is the third person in line of Presidential Succession of the US
oml7 TIL France was not the first to recognize the US as a legitimate nation. Morocco was the first. Even today, Morocco and the US share the US’ longest unbroken treaty.