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TIL that man by the name of John Leal put chlorine into a city’s water supply unbeknownst to anyone else which eventually landed him in court. His work would go on to cut the infant mortality rate in half and dropped the rate of death for typhoid nearly to zero.

9LRr TIL that in addition to being fluent in English, Greek, Latin, French, Italian and Spanish, Thomas Jefferson also studied Arabic, Gaelic and Welsh, and remains the most multilingual President of the United States.
a8PpN TIL about the KH-9 HEXAGON spy satellite, which used stereo film cameras to monitor Soviet military capability with a ground resolution greater than 2 ft. The film was wound in 4 maneuverable re-entry vehicles that could carry up to 77,500 ft each, and were recovered at 50,000 ft via aircraft.
6ElEQ TIL the 13-star American flag attributed to Betsy Ross was just one of many designs that fit the Continental Congress’ resolution that the flag have “thirteen stripes, alternate red and white; that the union be thirteen stars, white in a blue field”
d8lOK TIL Courtroom drawing as we know it in the United States was born in response to the 1935 media circus over the kidnapping and killing of aviator Charles Lindbergh’s infant son. The American Bar Association put forth a ban on cameras—leaving news outlets to seek alternate means of coverage.
vA7K TIL the often-quoted idiom “seeing is believing” leaves out half of the original sentence. The full quote from 17th century English clergyman, Thomas Fuller, is “Seeing is believing, but feeling is the truth.”