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TIL one of the reasons the Chinese never fully developed gunpowder weaponry was because their walls could sustain artillery bombardments. Even 20th century artillery guns had trouble piercing their walls.

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XEY98 TIL "Raisin-BRAN" lost it's trademark in 1944 when a court ruled the name was too generic for trademark protection. Skinner Manufacturing Company introduced Raisin-BRAN in 1925 and enjoyed monopoly until 1942 when Post and Kellogg introduced competing products with the same name
98vB TIL Pablo Picasso’s full name is Pablo Diego Jose Francisco de Paula Juan Nepomuceno Maria de los Remedios Crispiniano de la Santisima Trinidad Ruiz y Picasso
kOXQ4 TIL George Carlin recorded an HBO special on Sept 9 and 10, 2001 entitled ‘I Kinda Like It When A Lotta People Die.’
9lr7 TIL NASA Managers claimed that there was a 1 in 100,000 chance of a catastrophic failure aboard Challenger, but Richard Feynman discovered that NASA’s Engineers estimated the chance of a catastrophe at closer to 1 in 200.
XE7gk TIL that South Pole so much colder than the North Pole because it sits on top of a very thick ice sheet, which itself sits on a continent. The surface of the ice sheet at the South Pole is more than 9,000 feet in elevation--more than a mile and a half above sea level.