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TIL the Aorta can develop an aneurysm and burst, killing you in seconds. It's called the silent killer

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Y7GpZ TIL about Helios Flight 522. An engineer failed to set the pressurization system back to auto from manual, causing most (except 2 flight attendants) to lose consciousness. The auto-pilot reached Greece and stayed in a holding pattern until they ran out of fuel and crashed, killing all 121 onboard.
OGPEe TIL in the Battle of the Big Hole, Montana in 1877, Nez Perce Indians captured a howitzer from the United States Army, but dismantled it
nW86r TIL about the “Tetris Effect” where after playing a video game for significant amount of time, a person can experience altered thoughts, dreams and experiences in their real life.
m1JLE TIL that the term "OK" originated during the 1830s as a humorous abbreviation of "oll korrect," which was a misspelling of "all correct.
nwx7 TIL The first Atomic bomb dropped on Japan was assembled while the aircraft was actually in flight, because bombers kept crashing and burning on the runway. It took them 25 minutes to assemble the weapon while in flight.