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TIL that in Japan, citizens between 40-74 have their waist measured as part of the annual health check-up. If their waist is more than 33.5" for men or 35.4" for women, they are sent to nutrition and exercise professionals, with optional counselling. Even sumo wrestlers are measured after retirement

GxOj TIL the only way the BBC could record its live broadcasts in the 1950s was to point a film camera at a television. Because of this, the only known recording of the landmark sci-fi serial “The Quatermass Experiment” features an insect walking across the screen.
AegB TIL that in June 2009, a State Department official mailed Jack Dorsey with a request to delay scheduled maintenance of Twitter’s global network, which would have cut off service while Iranians were using Twitter to swap information about protests around Tehran. Twitter complied with the request.
rNDKd TIL about Titanic's original second officer who was replaced just before the maiden voyage. He took with him the key to the locker containing the crow's nest binoculars, resulting in the lookouts working with mere eyesight on the night of the sinking
nlAP TIL in 2010 a professor went on a diet consisting mainly of Twinkies to prove weight loss was from calorie deficit, not nutrition.
0de6y TIL: The Presidential Recordings and Materials Preservation Act was passed in 1974, specifically to prevent Richard Nixon from destroying records. In 1978 the Presidential Records Act was passed to apply to all future presidents.