TIL that Will Sawin enrolled at Yale at the age of 10, and graduated from both Yale and high school at the age of 18. He received a PhD from Princeton at the age of 23 and is the Fernholz Professor of Mathematics there.
TIL that a tissue company made a machine gun. Kimberly-Clark built the Multiple Caliber .50 Machine Gun Mount M45. Built during WW2, the M45 was used until the Vietnam War.
TIL that one of the co-creators of Keurig coffee machines sold his stake for $50,000 in 1997. In 2010 more than $2 billion of Keurig machines and K-Cups were sold.
TIL that Louis XVIII of France enjoyed reading 'Le Nain Jaune' although the newspaper made fun of him and his government. The king read it both for information, and because he loved satire. Louis even anonymously submitted articles for publication.
SpaceX: "The @Starlink team has made contact with all 26 satellites". The v3 units launched today on Starship flight 14 are operational. They are much larger than previous Starlink satellites.
TIL that when Hans Larive was captured during an escape attempt from a Nazi PoW camp, the German interrogator showed the Dutch officer how close he had come to the Swiss border. Larive taught the explanation to other prisoners, and many used the "Singen route" to escape to Switzerland.
TIL that Mariana Koskull was simultaneously the mistress of King Charles XIII of Sweden, and the crown prince (Jean Bernadotte, the future Charles XIV John). Mariana used a signal to indicate to Bernadotte when she was with the king, so the crown prince would know if he could visit her.
TIL that Switzerland's national bus system is run by the post office. PostBus, a division of Swiss Post, was created back when a single vehicle carried both people and the mail in rural areas.
TIL that Veronika, a cow in Austria, learned in 2016 how to use fallen tree branches to scratch herself. She is the first known example of cattle using tools. Scientists believe that Veronika is not unusually intelligent; rather, cows have always been able to use tools, but humans did not notice.
TIL that nylon stockings were so in demand after WW2 that they were targets of robberies. 18 pairs of stockings were stolen from one US home. When a murder occurred in Chicago, robbery was eliminated as the motive because nylon stockings were *not* stolen.
TIL that there are from 600 million to 1 billion cats in the world. The estimates vary because of the large number of stray cats, which outnumber owned cats. The US has the most owned cats (more than 90 million); including unowned cats, the country has more than 100 million.
TIL that Sears sold machine guns by mail. During WW1, the department store published a special military catalog. American soldiers could order a Colt machine gun, three Colt pistols, and other military gear for delivery to anywhere in the US or the battlefield in Europe.