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TIL in the 1960s, Swiss rivers were filthy and unsafe. A 1963 typhoid outbreak in Zermatt killed 3 and sickened over 450. A 1967 initiative led to a 1971 law on wastewater treatment. By 2005, 97% had sewage access.

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rRNg4 TIL that during the My Lai massacre, which resulted in more than three hundred Vietnamese civilian casualties by the American forces, there were three soldiers that tried to halt the attack and save women and children. The three were denounced as traitors by some of the Congressmen.
NaQJ TIL for Queen’s “Bicycle Race” music video, the band rented several bikes which naked models raced at Wimbledon Stadium. When the renting company found out how the bikes were used, it forced the band to purchase all the seats.
vgeD TIL that if a commercial airplane sits delayed on the tarmac for more than 3 hours, the FAA will fine the airline $27,500 per passenger. For larger planes, the total can be upwards of $10 million for the single flight.
yVol8 TIL that, according to professor Geert Hofstede, the United States is the most individualistic country on Earth.
R5w4w TIL that the first recorded person to fly was Yuan Huangtou, a Chinese former prince who was forced to participate in an experiment in 559 CE with other prisoners in which he was strapped to a kite and flown off a 33 meter tall tower. He was the only survivor and flew 2.5 km.