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TIL in the 1920s Helene Adelaide Shelby patented a device to help obtain criminal confessions. The suspect was confronted by a human skeleton with glowing red eyes and the interrogator would talk through the skeleton via megaphone. A camera in the skull would record the confessions.

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YpRxP TIL a woodpecker's head endures 1500 G's (g-force). It distributes most of the energy to it's body, while the head only experiencing 0.3% of the total force which dissipates as heat. They have to take breaks in pecking to cool down the inside of their skull.
4Xbjg TIL that the song "Eenie Meenie Miney Mo" was not originally written with the word "tiger" in it but something much more offensive
PYl8L TIL Nazi Germany destroyed the city of Warsaw virtually completely following an uprising that resulted in the 500k citizens being taken captive. Germany had plans to turn the city into a manmade lake to erase it completely from history.
b6YbE TIL Swiss mathematician Leonhard Euler's work touched upon so many fields that he is often the earliest written reference on a given matter. In an effort to avoid naming everything after Euler, some discoveries and theorems are attributed to the first person to have proved them after Euler.
6Ewxw TIL the Atakapa people in SW Louisiana survived hurricanes by tying themselves up to live oak trees using grape and rattan vines. In 1830, the Atakapa begged a colonist to tie himself and his family high in a live oak tree for their safety; they refused and he and his family drowned.