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TIL In WW2, a B17 called Old 666 had all its guns upgraded to .50 calibre and single handedly fought off a group of Japanese zeroes during a mission. 2 crew members received the Medal of Honor

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kpEE TIL in 2008 there was a gamma ray burst, a violent cosmic explosion, 7.5 billion lightyears away, which is halfway across the visible universe, which could have been seen with a naked eye from the surface of the Earth. Anyone who saw it was looking billions of years into the past with their eyes.
Yp5EA TIL Calcium deficiency can contribute to mood problems such as irritability, anxiety, depression, and difficulty sleeping.
P1kvO TIL that people who attempted suicide are at a higher risk of dying from a cardiovascular disease
b6Zjp TIL that in 2018 Okayama, Japan bus drivers strike by continuing to run routes and refusing to take anyone’s money.
b9vep TIL the first recorded battle in history was the Battle of Megiddo in 1457 BC. It left such an impression on the Levantine people there that they believed the final battle of humanity would take place there as well. That's where the word Armageddon comes from.