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TIL of the Price–Anderson Nuclear Industries Indemnity Act (1957) that put a limit on compensations following a large scale non-military nuclear-catastrophe. It was ratified to lower the risk for private development and use of nuclear technology.

6EpPw TIL that an average adult in North America will eat 1,996 lb (905 kilos) of food per year. An average American consumes 3,663 calories per day, while in Europe it is 3,367 and in Asia is just 2,779.
mx95p TIL that Jimmy Boyd's I Saw Mommy Kissing Santa Claus was condemned by the Roman Catholic Church in Boston when it was released on the grounds that it mixed kissing with Christmas. Boyd was photographed meeting with the Archdiocese to explain the song. After the meeting, the ban was lifted.
4kp0X TIL Early drones were developed during the First World War. These radio controlled planes were primarily for target practice but by 1942 a drone with a built in TV camera was capable of delivering a torpedo to a ship 20 miles from the controller.
69XVY TIL that in 1972 school backpacks as known today were first used at the University of Washington. Existing backpacks for day hikers were modified by Jansport, at the time a Seattle-based company.
OoRy1 TIL that the Pirahã language, spoken by the Pirahã people of Brazil's Amazonas region, can be whistled, hummed, or encoded in music. Consonants and vowels can be omitted altogether, and the meaning conveyed solely through variations in pitch, stress, and rhythm