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81

TIL humans can differentiate between hot and cold liquids by sound

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6vVY TIL that Mark Twain repaid his pre-bankruptcy creditors in full, though he had no legal obligation to do so. “I am not a business man; and honor is a harder master than the law. It cannot compromise for less than a hundred cents on the dollar, and its debts never outlaw.”
N8MJ TIL that the deepest layer of the ocean, the hadopelagic zone, is named after the realm of Hades, the Greek underworld. This ranges from 6000m (3.7 miles) deep, down to the very lowest reaches. Populations are sparsest here, and are believed to be sustained by marine snow and thermal vents.
kOjx7 TIL Arlington National Cemetery includes Arlington House, a Memorial to Robert E Lee
8QgX TIL In 1968 a student at Oregon University turned up to every class in a black bag and sat at the back of the room in silence. At first the student was treated with hostility, then curiosity before finally friendship. This is known as the mere-exposure effect.
JYbR8 TIL about the saying "Cup of Joe". The meaning of the saying is a little unclear but it was narrowed down to 2 ideas. The term was either derived from "Cup of Jamoke", which is from Java and Mocha and then was shortened to Joe or it is using Joe as a fellow guy to signify the drink of a common man.