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TIL There is an Airlines Special Service Request code called DPNA which alerts airlines that a passenger with intellectual or development disability is travelling and would need special assistance/attention. This code was introduced by IATA in 2008, but many are not aware of it.

kODp4 TIL a truck carrying six torpedoes overturned in Denver causing an eight hour traffic jam after no one picked up the emergency number with the Navy and the Army couldn't find anyone to fly an EOD team.
neOr9 TIL while studying Madagascar periwinkle leaves used as folk remedy for diabetes in the 1950s, scientists found plummeting white blood cells instead and isolated out vinblastine and vincristine — effective chemotherapy drugs which has dramatically improved survival in leukemia patients.
9YP8Q TIL there's a law in California that prohibits employers from asking job candidates about their previous salaries and requires the hiring company to give a salary range if asked.
X1or TIL that in 1861 a slave took over on a confederate ship and delivered it to the Union. He later was given the ship to command during the Civil War. After the war he bought the house he was a slave in, and became a US congressman.
KOMn4 TIL that Mexico's Great Pyramid of Cholula is the largest monument ever constructed on earth, having nearly twice the volume of the Great Pyramid of Giza. A pre-classical masterpiece, it was found to be part of a vast complex of interwoven rooms and temples. Excavations are ongoing.