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TIL World War II bomb shelters underneath London are being converted to hydroponic gardens lit with wind-powered LEDs.

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KY6vR TIL that the regional hospital in Sundsvall, Sweden, is cooled year-round with stored snow from the winter months, reducing energy consumption for cooling by over 90%
OGLOe TIL that the word "Sideburns" came from the American Civil War Union General, Ambrose Burnside's unusual facial hair. They were originally named "Burnsides", but this was later corrupted to the word "Sideburns" that we know today!
Braxk TIL That between the 14th-19th centuries, due to their early invention and love of ceramics, no glass was produced in China. Due to this, they were left behind in the progression of sciences and didn’t have things like glass windows and mirrors.
QN8de TIL it is estimated that there are are about twice as many horses as there are people on Easter Island (6,000 vs. 3,000)
xoL0 TIL that Johnny Depp, Jude Law, and Colin Farrell gave their entire salaries from the movie “The Imaginarium of Doctor Parnassius” to Heath Ledger’s daughter.