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TIL that engineers at IBM had to hand weave their memory 14KB in total for both control and redundancy of their flight computer in the SATURN V launch vehicle. Wire shaped inside the mesh represented a bit based on the magnetic field generated by the direction of current flowing through it.

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8ZVP TIL when the US Navy refused to cooperate during the filming of the movie Crimson Tide, filmmakers waited outside Pearl Harbor for a submarine to head to sea and chased it with a boat and helicopter to get the shot of it submerging.
0wRJy TIL that since the inception of Forbes “400 Richest Americans” list in 1982, only one man from said list has ever been convicted of murder: philanthropist and wrestling coach, John du Pont.
Epdo TIL that prisoners on Greenland are allowed to leave their cells between 06.30am-09.30pm, work, visit relatives, have their own cell key, and use firearms.
nepOW TIL that much of the "small-penis porn" subgenre features guys who are actually about average size, or even bigger.
DK6V TIL that citizens sent Ulysses S. Grant more than 10,000 boxes of cigars as gratitude after a victory at the Battle of Shiloh. He died of throat cancer in 1885.