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698

TIL Glitter can cause blindness.

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wLYvJ TIL that astronauts who return to Earth after a long time in space drop things in mid-air and expect them to float.
NX0RN TIL of RAS syndrome (RAS stands for "Redundant Acronym Syndrome" Syndrome ), which is the redundant use of one or more of the words that make up an acronym (or other initialisms) in conjunction with the abbreviated form. (EX: PIN number, ATM machine, chai tea)
BmxD TIL that MIT students discovered that by buying $600,000 worth of lottery tickets in the Massachusetts’ Cash WinAll lottery they could get a 10-15% return on investment. Over 5 years, they managed to game $8 million out of the lottery through this method.
DQZmp TIL Cambodian OB/GYN (and future Oscar-winning actor) Haing S. Ngor survived the Khmer Rouge regime by hiding his education. His wife and unborn child died because performing a life-saving caesarean section would have exposed his medical knowledge and put his entire family's lives at risk.
jVBE TIL in an attempt to shut down the MS13 gang in the early 90’s, illegal members were deported to their home countries. Instead of shutting down, deportees gained territory upon their return home and now MS13 has over 100,000 members worldwide and is one of the largest, deadliest gangs.