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TIL that until the 1950s teaching of sign language in Australia was split along religious lines: Protestants learnt Auslan based on British Sign Language (BSL) while Catholics taught by Irish nuns learnt Australian Irish Sign Language (AISL). There are now only a few AISL speakers left.

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DdlY TIL Hoeryong concentration camp in North Korea currently holds 50,000 men women and children who suffer a level of slavery, torture and experimentation comparable with the holocaust.
Y7Xnd TIL: GPS satellites are far enough away from earth that time moves slower for them, so they are pre-corrected to compensate for relativity using Einstein's calculations.
160w8 TIL that during the 2001 anthrax attacks, one of the biggest concerns of investigators, was ensuring that smallpox samples had not been placed in with the anthrax.
Z8eDB TIL In 2016, Wall St hedge funds uncovered a scandal in the Georgia Chicken Index, and may have uncovered price fixing by Big Chicken
R7J14 TIL: American cheeses have that distinctive orange color because producers dye it with a natural food additive, Annatto. The color was once considered to indicate higher quality cow diet and superior quality cheese.