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188

TIL that San Bernardino, CA has a murder rate of 31 in 100,000 residents (Chicago, IL is 18 in 100,000 residents)

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ne5yr TIL donuts were invented in New York and were originally called "Oily Cakes". The name later changed to Donut because nuts were added to the middle because the center would not cook properly.
XJnX TIL German scientist, Gerhard Domagk, developed the antibacterial agent Prontosil, a sulfonamide. He used this agent to treat his own daughter, preventing her from an arm amputation. He won the Nobel Prize in Medicine in 1939.
Zpk64 TIL of Jack Parson, a rocket scientist who was involved in the religion of Thelema and whose wife ran off with L Ron Hubbard after they conned him of his savings to buy three boats
WkPvX TIL that Apple actually license the 'iOS' trademark from Cisco. Cisco had used it for at least 10 years prior to Apple for their operating system.
m9MM TIL that every known prime number above 3 is one more or less than a multiple of 6 (6n±1)