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TIL that Austrian schools and kindergartens keep a stockpile of potassium iodide pills in case of a nuclear disaster

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via reddit.com

Egr4w TIL In 1788, a British fur trader recruited 50 Chinese from Macao and Guangzhou to Vancouver Island for building a fortress and schooner. Spaniards arrived in 1789, fought with the British, and what happened to the Chinese became a mystery as some escaped and others may have been killed
dD5Gj TIL about Harry Washington, a slave owned by George Washington who escaped to fight for the British during the Revolutionary War, fled to Canada after the war, and eventually joined a rebellion against the British in Sierra Leone
R7wGQ TIL A full-time nurse named Marie Van Brittan Brown and her husband Albert invented the first home security system in 1966. She was inspired to do so because she saw how long it would take the police to arrive in her neighborhood after a crime was reported.
1Y7D TIL the Law & Order sound is trademarked, and described as “two musical notes, a strike and a rapid rearticulation of a perfect fifth pitch interval, which in the key of C sounds the notes C and G, struck concurrently”
rmBw TIL Starship Troopers is the first sci-fi novel on the reading lists of three of the five US military branches