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TIL Elves in middle earth are immortal. If their body is killed their spirit is given a choice to either stay in middle earth or move to a higher plane. Almost none return after death.

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ne1AG TIL This photo of U.S. Army code breakers trained by William Friedman and his wife Elizebeth during WW1 spells out ‘Knowledge is Power.’ By facing either forward or sideways, the soldiers formed a coded phrase utilizing Sir Francis Bacon’s biliteral cipher.
mxpDR TIL that David Koresh, leader of the Branch Davidian ranch cult in Waco was a songwriter and musician that attempted to make it big in Hollywood. (Fact #5 on list in link)
RJJl TIL that in 1966, the U.S. Postal Service switched from using passenger trains to transport the majority of mail to using trucks and airplanes. The loss in revenue caused passenger rail to become unprofitable in the United States.
QXmL TIL Nestlé aggressively distributes free formula samples in developing countries until the supplementation has interfered with the mother’s lactation. After that the family must continue to buy the formula since the mother is no longer able to produce milk on her own.
5YJXr TIL A giant virus has been discovered with its own immune system. French scientists found these giant virus defence mechanisms work in a similar way to the CRISPR-Cas system, whereby the virus learns to recognise invaders, capture their genetic material and use this information to destroy them.