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TIL Earth's atmosphere is so thin, if you could walk straight upward at a normal walking pace, consciousness would be challenged after about 1 hour (@ 18k ft / 5,500 m).

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R5vxw TIL that the oldest known living land animal is Jonathan, a tortoise estimated to have hatched no later than 1832.
ep50g TIL after Post Malone found out that other patrons at the Houston bar he was in had covered his check, he asked the waitress to charge him for anything so he could leave a tip. The waitress then rang him up for a $1 bill, and in return, he tipped her $20,000, leaving a total of $20,001.
l7p9V TIL about The Million Dollar Highway in Colorado. It was built in 1883 as a toll way and operated as such until the 1920s when it was rebuilt. Legend has it that an early traveler was so overcome by vertigo on the steep, winding road that he said he would never travel it again even for a million $.
4k0Qg TIL a quarter is often referred to as "two bits" unwittingly in reference to pieces of eight used in the golden age of piracy. One Spanish dollar was worth Eight Spanish Reales. Two Reales (or bits) was equal to a quarter of one dollar.
WgAA TIL You must expressly state that you’re invoking your right to “Remain Silent” or your silence can be used against you in court.