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TIL Abraham Lincoln’s loyal dog Fido was also needlessly murdered shortly after the President’s assassination.

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1aLRW TIL Microwave power settings don't actually adjust the power levels. The magnetron simply turns on and off in cycles to allow heat to be radiated throughout the food.
yQMop TIL the tale generally considered to be the first detective story is Edgar Allan Poe's, "The Murders in the Rue Morgue," in 1841. The story describes the extraordinary analytical power used by Monsieur C. Auguste Dupin to solve a series of murders in Paris.
XEa8R TIL the US police once fire bombed a black neighborhood by dropping explosives from a chopper, burning down 61 houses in Philadelphia
11MD TIL Rollercoaster loops are never circular, but instead, are designed with an upside down “teardrop” shape. This is because perfectly circular loops will subject riders to up to 6Gs of g-force, causing them to get injured.
VBwx8 TIL the song "One", popularized by Three Dog Night, was written by Harry Nilsson. Nilsson wrote the song after calling someone and getting a busy signal. The "beep, beep, beep" tone of the busy signal became the opening notes of the song.