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TIL emergency oxygen masks on airplanes only last for ~10-14min.

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D4vP TIL James A. Garfield could write in Greek and Latin at the same time, using both hands (one for each language)
R7JjQ TIL twins Grace and Virginia Kennedy (b. 1970) were often left alone with their German speaking grandmother as children and as a result developed their own secret language. They used it til they were about 8 when they were forbidden to by their father. They called each other "Poto" and "Cabengo".
xY7o TIL Steve McQueen’s infidelity saved his life. He was supposed to attend the dinner party where the Manson family murdered Sharon Tate and others, but skipped it after he “ran into a chickie”.
dD5xK TIL that adults who played Pokémon video games extensively as children have a brain region that responds preferentially to images of each Pokémon. Stanford researchers identified the brain region activated by Pokémon characters.
QNXmE TIL Drivotrainer was the first computerized driving simulator used for Driver's Ed in the 1960s