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TIL the Emoticon was invented by Scott Fahlman on September 19th, 1982

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gr1m8 TIL humans have smaller jaws and bigger brains than our primate forebears because of a mutation in the MYH16 gene. The jaw muscles are made smaller and weaker as a result of the gene mutation, which lessens the force applied to the skull, which can expand, letting the brain grow bigger.
1aBad TIL that the American version of the music video for Soul Asylum's "Runaway Train" features 36 images of missing children. The music video helped resolve 26 of those cases.
56r TIL during WWII, 12000 conscientious objectors served the government without pay. Their many jobs included smokejumping into forest fires, being human test subjects, and working at mental hospitals, where their pacifist approach revolutionized the way mental patients were treated.
DWgY TIL that according to studies, the average high school student has the same amount of anxiety as a 1950’s child psychiatric patients.
d1KB TIL Hugh Hefner was tried on obscenity charges in Chicago in 1963, but the jury was hung.