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TIL that a German Leopard tank's aiming system is so precise that it can balance a beer glass on its barrel while driving.

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NXYx6 TIL that in 1835, Richard Lawrence attempted to assassinate President Andrew Jackson, marking the first such attempt on a sitting U.S. president. Lawrence's two pistols both misfired, allowing Jackson who was 67 at the time to respond by beating him with his cane until he was restrained.
YZed TIL that a volcanic explosion 70,000 years ago wiped out all but 10,000 humans.
Yp5AW TIL mercy dogs were trained during World War I to comfort mortally wounded soldiers as they died in no man's land
PYonJ TIL that after the Nazi assassination of Austrian Chancellor Engelbart Dollfuss. Fascist Italian dictator Mussolini mobilized the Italian army on the Austrian border and threatened Hitler with open war if German troops crossed into Austria.
e0jJb TIL even though Canada has converted to the metric system, many things such as height, weight, floor area of houses, and more are still measured in imperial units