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16

TIL A 1996 survey found that 95% of all American preschoolers had watched Sesame Street before they were three years old.

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W7yoX TIL that in 1988 the FBI National Center for the Analysis of Violent Crime (NCAVC) did a psychological profile of Jack the Ripper in time for the 100 years anniversary of the White Chapel murders.
Zpm0a TIL that during WW2, Leonard K. Carson led an air combat school within his fighter unit, called "Clobber College".
d8xR8 TIL that Honey Bees aren't native to the US, and are wimpy pollinators compared to native bees.
DMYr TIL that sand dollars are the skeletons of flattened burrowing sea urchins
PYOdE TIL A second is called a second because it is the 2nd division of the hour by 60, the 1st division being a minute.