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TIL liquid nitrogen is not poisonous but can expand up to 695 times in volume when it vaporizes and has no warning properties such as odor or color. If this happens, it can displace oxygen and cause unconsciousness or even death.

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oVdA TIL that a popular 17th century Chinese concoction of pickled fish & spices called “kê-chiap” was picked up by the English explorers. The English settlers took it with them to the American colonies. This concoction became quite popular and we know it today as Ketchup.
BgJVL TIL The US Code of Laws still refers to Native Americans as “Indians”
rRA5x TIL of the “availability heuristic,” by which people judge the likelihood of events based on the number of times they hear about them. Explains why many people are pessimistic about the world given the amount of media coverage available, which favors bad news.
rNJL1 TIL The Little White schoolhouse built in 1853 in Ripon, Wisconsin, is the birthplace of the Republican Party. The first meeting was held on March 20, 1854 to fight against the spread of slavery. This meeting and another in Jackson, Michigan, on July 6 led to the formation of the Republican Party.
JYaRl TIL the largest tumor successfully removed from a human patient was a multicystic mass of the right ovary weighing 303 lbs (137.6 kg). The 6-hour operation took place in 1991 at Stanford University Hospital where the patient lay on her side, so as not to be crushed by the 3-ft diameter growth.