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TIL “Square Waves” occur on the ocean when perpendicular wind currents meet, and are extremely dangerous and capable of sinking ships

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0wpJj TIL Great White Sharks are rarely seen in captivity because they will usually stop eating and exhibit depressive behavior upon capture.
ANdAl TIL the 80/20 Principle: 80% of your results come from 20% of the efforts, and the phenomenon is seen across all sorts of fields.
NXLR1 TIL During the American Civil War the town of Winchester Virginia changed hands over a dozen times between the Union and Confederates due to it’s strategic location in the Shenandoah Valley. A British observer called Winchester the "shuttlecock of the Confederacy."
M7Vy0 TIL As Germany was about to lose the First World War Erich Ludendorff was forced to resign and escaped the country on a false passport while wearing a fake beard. While in Sweden he wrote his memoirs which were considered a showcase of his "caesar-mania".
LQQX0 TIL Goldfish can recognise classical music. A study was done in which researchers played Bach and Stravinsky. The fish were first trained to bite a bead when they heard both, then only one and not the other, and finally just different clips of one. One fish preferred Bach and avoided Stravinsky.