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TIL Charles Darwin married his cousin, but only after making a list of pros and cons, one of the cons being “less money for books”

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X0mxX TIL Napoleon introduced the printing press to Egypt in 1798 so that he could issue his decrees and ordinances.
7glP TIL Stalin’s real last name was Dzhugashvili. Stalin is Russian for Man of Steel.
4k91o TIL that teenagers' brains are more tuned into unfamiliar voices than their mothers' voices. This shift occurs around ages 13-14 during puberty, helping teens expand their social connections beyond their family.
XEn6r TIL that in 1862, the District of Columbia Emancipation Act paid those loyal to the Union up to $300 for every enslaved person freed. The largest individual payout was $18,000 for 69 slaves, which is equal to $556,024.34 in 2020.
9w7Z7 TIL After the US Navy lost the USS Thresher in 1963, it instituted a quality assurance program called SUBSAFE for its submarines. As a result they went from losing 16 submarines to non-combat reasons in the 48 years before, to losing only the USS Scorpion (which wasn’t SUBSAFE certified) since 1963.