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TIL It took 100 days to put out the flames of the 9/11 attacks. Everytime a large chunk of debris was moved a rush of oxygen would severely intensify the flames.

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wlwJ TIL Japan’s oldest business, temple builder Kongo Gumi, in operation under the founders’ descendants since AD 578, went out of business in 2006.
6ELnm TIL that in areas with high Jewish populations, elevators are designed to stop at every floor on Saturdays. This is because the practice of Makeh B'patish, or "completion", is banned on the Sabbath, barring Jews from completing electrical circuits by using switches.
wLlBJ TIL '23 skidoo' is believed to be America's first national fad. Popularized in the early 20th century, the phrase means to make a quick exit (sometimes by force) and was seen on Pennants and arm-bands at shore resorts, parks, and county fairs. The origin of the phrase is still debated.
9YlDB TIL that digital cameras were developed so spy satellites could send images back to earth more quickly. Before digital cameras in 1976, spy satellites used film. After the film was shot, the satellites loaded the footage into capsules and dropped them from orbit into the atmosphere for collection.
v1XOB TIL in 1995 a shirt that featured Margaret from Dennis the Menace saying “Someday a woman will be PRESIDENT!” was pulled from shelves when one Walmart shopper said it offended “family values.” It was restocked 4 months later due to women’s groups threatening to boycott Walmart.