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TIL That knitting was used as an espionage tool during WWI.

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J1d88 TIL After his death John Belushi was found to have 26 recent needle marks in his arm
0d8PA TIL the blazon of the European flag describes it thus: On an azure field a circle of twelve golden mullets, their points not touching.
OkN7 TIL that a medical device company illegally tested a bone cement on patients killing at least 5 when the cement was injected into their spines and leaked into blood vessels causing massive clots in their hearts and lungs. Company executives received prison sentences of less than a year each.
Wkv74 TIL of the "Tumi" scalpel, believed to be the oldest surgical instrument to exist (8000 BC). It was used for trepanation, the art of drilling a hole into the skull. By opening the skull, tribes believed that it would allow the demons that caused headaches, melancholy or epilepsy to escape the body.
yV5L8 TIL according to the National Adult Literacy Survey, 70% of all incarcerated adults cannot read at a 4th grade level, “meaning they lack the reading skills to navigate many everyday tasks or hold down anything but lower (paying) jobs.”