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TIL about a group of unsung medical heroes.

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DD9D TIL that solitary confinement can cause neurological damage that is so profound it can be seen on EEG-scans and “the brain may become as impaired as one that has incurred a traumatic injury”
GYMX5 TIL it is illegal in Alabama to play cards on Sunday. According to section 13A-12-1 of the Alabama code, those who break this rule shall be fined not less than $10.00 nor more than $100.00, and may also be imprisoned for maximum three months.
rNABd TIL about Goldbach's conjecture, one of the oldest and best-known unsolved problems in mathematics. It states that every even natural number greater than 2 is the sum of two prime numbers. The conjecture remains unproven despite considerable effort.
6EyXm TIL there was 128,000 square kilometres (49,000 sq mi; 32,000,000 acres) of irrigated lawn in the US, three times the area of irrigated corn
OoPYR TIL about Roselle, a seeing-eye dog that led her blind owner, Michael Hingson, down 1,463 steps from the 78th floor of the North Tower of the World Trade Center on September 11th, 2001. Dog and owner exited just before the South Tower collapsed, and both survived.