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TIL The famous "rods from god" concept of a space-based weapons system of orbiting tungsten rods was developed by science fiction writer Jerry Pournelle.

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Br4oD TIL of angel gowns. Wedding dresses are donated to charities and people sew them into infant sized dresses for deceased infants that died in NICU. Grieving families can take pictures or baptize their babies prior to laying them to rest. These are made through no cost of the family.
9wv4M TIL in 2006, the New Zealand All Blacks rugby team and adidas created a poster made with ink that was mixed with the blood of the players on the team.
x6J8D TIL TV physicist Brian Cox was also the keyboard player for D:Ream
yQGBe TIL Alan Turing's Bombe machine, built to crack Germany's Enigma-encrypted messages during WWII, was far too slow to decrypt messages until he realized that all encrypted messages ended with "Heil Hitler." They were then able to decrypt messages within hours, and change the course of the war.
165mW TIL that Europeans starting using the term “Aztec” to refer to the people who lived around the city of Tenochtitlan, but that’s not what they called themselves. They referred to themselves as the Mexica.