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TIL a Nilometer was a structure for measuring the Nile River's clarity and water level during the annual flood season

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x6vxg TIL about psychedelic cryptography - messages that only people under the influence of psychedelics can understand.
OJN7 TIL that Vaginal discharge is acidic enough to bleach black panties
xG4g TIL That a Flood Destroyed The Home Of Hate Group Leader Who Claimed “God Sends Natural Disasters To Punish Gays”
ne98P TIL black people are less likely to know how to swim due, in part, to historic bans on black people swimming in public pools. In 1964, a motel manager poured acid in the pool to scare away black swimmers who were staging a "swim in."
E17vd TIL: Fels-Naptha soap no longer contains naptha