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TIL the “Death Zone” is what climbers call the highest part of Mount Everest (everything above 26,247ft). Due to its lack of oxygen, the body literally begins to die, cell by cell. This can result in health risks like impaired judgement, heart attack or stroke, and altitude sickness.

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l7jer TIL the number on a jersey affects your opponets perception of you athletic prowess.
OBm6 TIL Hellbanning: The practice of making a user’s [troll’s] contributions invisible to the rest of an online community, while the user still perceives they are participating normally – i.e. blanket enforcement of “don’t feed the trolls”.
e0ZL6 TIL a Russian lab housing biological weapons and pathogens accidentally released a deadly anthrax strain in 1979, killing an unknown number of people. The lab is still active.
O8Qg TIL to deter slaves from committing suicide by jumping overboard, the captain of a slave ship lowered a slave into the water with a rope then instantly pulled her out. Sharks had torn off the lower part of her body.
rNGDd TIL Llanfairpwllgwyngyll-gogerychwyrndrobwlllllandysiliogogogoch is the name of a town in Wales.