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TIL Of the metronome of Leningrad. During the Nazi siege of the city they installed 1,500 loudspeakers that constantly played the sound of a metronome. A slow rhythm meant safety and a fast rhythm warned of an air attack.

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Br4YK TIL that Pizza Hut had plans to project their logo onto the Moon
yx0v TIL that an engineer at NASA spent fifteen years trying to become an astronaut, being rejected fourteen times before finally being selected in 1998.
vPMY4 TIL The annual award presented by the President's Committee on Employment of People with Disabilities is called the Harold Russell Medal. After the two time Oscar winner and disabled WWII veteran.
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