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TIL: In 1993, a Russian lunar rover (Lunokhod 2) that has been on the moon since 1973, was sold to Richard Garriott for $68,500

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Y7g8A TIL in 1956-1957, the chinese communist party (ccp) launched a campaign called "hundred flowers movement" where they encouraged chinese citizens to give their opinions about the communist party. it failed. then mao zedong, conducted an ideological crackdown to those who criticized the party.
pY9pQ TIL: Vampire bats can detect heat using a modified version of the receptor that responds to burning or capsaicin (spicy things). They can "see" at ~30 degrees C
ONM4 TIL Military service dogs always outrank their handler. This is out of respect and to prevent abuse of the dogs as the handler would be subject to severe disciplinary action for abusing a higher ranking officer.
KODp9 TIL That a rat king is a collection of rats who’s tails have been intertwined and bound together. They grow together and eat together and sometimes when one of them dies they eat it together. There can be up to 32 rats in one rat king.
VBwV0 TIL in 1963 a 16 year old sent a four-question survey to 150 well-known authors (75 of which replied) in order to prove to his English teacher that writers don't intentionally add symbolic content to their books.