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TIL-An undergraduate architecture student in '78 found a flaw in the Design of Citicorp Center '77: that Citicorp Center could blow over in the wind. Repair work was done throughout the night and quit at daybreak, just as the building occupants returned to work. The story remained a secret until '95

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GjBN TIL that John Scurlock, the man who invented safety air cushions to catch people jumping out of buildings during a fire, also invented the bouncy castle.
9nMG TIL People often hallucinate after losing a loved one or pet, they’re called “Grief Hallucinations”. One study found over 80% of elderly patients experience hallucinations of their departed spouse one month after their passing.
J1B5k TIL baking soda does not absorb odor. It absorbs moisture and is an effective detergent when used as a scrub, but an open box in your refrigerator does nothing.
4kbZw TIL pop star Katy Perry has been nominated for 13 GRAMMYs since 2009 and has not won any of those nominations, while also being a recipient of 14 People's Choice Awards, 5 Billboard Music Awards, 5 American Music Awards, and four Guinness World Records among many other awards.
m1leO TIL that between 1718 and 1775 over 52,000 convicts were transported from the British Isles to America, mainly to Maryland and Virginia, to be sold as slaves to the highest bidder. Transported convicts made up a quarter of the British immigrants to colonial America in the 18th century.