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TIL the symbol for bluetooth is a bind rune made from the pre-viking runes of the tenth century king, Harald Bluetooth’s name.

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R57Ej Til that your body has a relatively constant total daily energy expenditure. It will allow temporarily elevated caloric burns but the more days that you increase your expenditure, it will normalize your daily expenditure by showing or shutting down other processes.
woKW1 TIL about the "catapult-able cockpit", created by Romanian inventor Anastase Dragomir and successfully tested in 1929 at the Paris-Orly Airport, which featured a parachuted chair that was ejected from an aircraft. It was the first modern layout for an ejection seat, later perfected during WWII.
BQGW TIL one of the undisputed fathers of computer science helped develop crypto analytical devices to fight the Nazis. His reward; a criminal conviction for homosexuality and forced chemical castration. Within 1 year he became impotent, developed breasts due to hormonal imbalance, and committed suicide.
E48X TIL there is one person in the world with “Syndrome X” which prevents normal aging. Brooke Greenberg is 20 and appears to be one year old.
AN9B TIL Nathan Fillion in 1998 performed in his first major motion picture, Saving Private Ryan, as the wrong (Minnesota) Ryan.