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TIL that during WW2, nickel was so important for producing armour plating that the US stopped using it to make nickels - and used silver instead.

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loyma TIL That the U.S. does not and has never used the Imperial system. They switched directly from English units to the U.S. Customary System in response to it.
NX6y8 TIL it's debated in Australia whether national disability insurance should cover sex work. This has already been implemented in Denmark and the Netherlands.
69yxX TIL Jessica Cantillan, a 17 yr old Mexican citizen received the wrong heart and lung in a transplant surgery at Duke University in 2003. The transplant surgeon (world renowned)wasn't notified untIl the end of surgery. Her body rejected the organs and despite a second surgery, she died.
J1bRm TIL Ants can end up following each other in a cercle (called an ant mill or a death spiral), until they die of exhaustion. Similar phenomena have been noted in processionary caterpillars and fish.
PYAEV TIL that in 2012, a British couple who was getting married in Manchester jokingly invited Queen Elizabeth II to their wedding. Their surprise was great when the queen came to attend their wedding accompanied by her husband.