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TIL of the Leatherman, a vagabond who walked an annual 365 mile circuit in Connecticut and New York for over 30 years; he wore handmade leather clothes, slept in caves, and communicated with gestures in broken English, though he was fluent in French. His background, name, and origin are all unknown.

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QNPdX TIL how trash is disposed of in modern large submarines. Trash is deposited into a Trash Disposal Unit (TDU) which collects and compacts it into a galvanized steel can. A ball valve is opened allowing the scrap iron-weighted can to fall down to the sea floor.
dL6j TIL that a toy store owner saw a cartoon which recounted Teddy Roosevelt’s refusal to shoot an old injured bear a guide had tied to a tree for him to kill. From that moment forward he called his toy bears “Teddy Bears”.
4RyX TIL that Mughal emperor Shah Jahan got rid of the scaffolding on the Taj Mahal by telling peasants that any of the scaffolding material they took was theirs to keep. Apparently they took it away in a single night.
vmD4 TIL that in WWII Charles Lindbergh instructed P-38 pilots how to stretch their typical 7 hour maximum flight endurance time to 9 hours (an extra 400 miles of range), which dramatically changed Pacific Theater operations
wL6BE TIL that elements within the Japanese Imperial Navy originally planned to assassinate British entertainer Charlie Chaplin during his visit with the Japanese PM in order to provoke a war with the US but Chaplin was not present when the PM was killed.