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TIL the use of electricity for medical purposes dates back at least 1800 years: the Imperial Roman physician Scribonius Largus wrote a book of cures in the 2nd century; his treatments for gout and headaches were accomplished by applying the current from an electric eel (or two) to the affected area.

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1Q98 TIL nearly 70% of African American children and 60% of Hispanic children do not know how to swim. African-American children drown at a rate nearly three times higher than white children.
aa9Z TIL from 1181 to 1218, the Khmer Empire was ruled by a Buddhist king whose primary goal was to alleviate the suffering of his subjects. “He suffered from the illnesses of his subjects more than from his own; the pain that affected men’s bodies was for him a spiritual pain, and thus more piercing.”
pYwGb TIL about Walter Bonatti and Amir Mehdi, forced to spend a night on K2 without a tent because the first ascenders were afraid of being overshadowed. Bonatti upstaged them 4 years later summitting the even harder Gasherbrum IV; Mehdi was maimed by frostbite and never climbed again.
xmWB TIL That the US army counted more dead in it’s civil war, than all other wars combined, losing almost 2,5% of the total Population at the time
rR99w TIL about “Charlie the Horse” who survived being trapped by the Frank Slide for a month but then died gorging on brandy and oats provided by his rescuers.