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TIL: Medically managed hypothermia has been popular and in use in medicine since the 1930s-1940s when research was conducted demonstrating the absence of irreversible neurologic change in humans cooled to as low as 26*C over a 24-hour period after sustaining traumatic brain injuries.

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69NA8 TIL Diophantus of Alexandria, a mathematician from the 3rd century, came up with many mathematical equations that took a long time to solve. The last one, Fermat's Last Theorem, was first stated in 1637 and was proved in 1995 by British mathematician Andrew Wiles.
woVeo TIL that the term 'making love' meant flirtation or verbal protestation of love and devotion since its inception in the 1590s up to the early 1900s
1aVJD TIL International Women's Day was founded by the Socialist Party of America and later became a national holiday in Soviet Russia. It was predominantly a Communist holiday until adopted by the UN in 1975.
E1kP7 TIL that even at 0 Kelvin (absolute zero), atoms continue to vibrate due the Heisenberg uncertainty principle, which states that a particle's momentum cannot be precisely determined if its position is known, and vice versa. Basically, because the atom's position is known at 0K, its momentum can't be
WkQV4 TIL fairies in traditional folklore are considered malevolent creatures to be avoided and warded off, rather than the benevolent creatures modern culture suggests.