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TIL In 2014, Christians in South Korea put up a giant Christmas tree which was visible from the North Korean border. The North Koreans claimed it was a tool for psychological warfare and demanded it be taken down. The defence ministry claimed the was dismantled for safety concerns.

D1xNj TIL a man had a heart attack at a grocery store in rural Minnesota, 20 people lined up and performed CPR on him for over an hour and a half until paramedics arrived and he survived.
VMVZQ TIL The GPS (Global Positioning System) is owned by the U.S. Government and is operated by the U.S. Space Force.
JYX9j TIL about zip bombs, large files that get compressed down to kilobytes, in order to render a system useless while unpacking them. A well known example is 42.zip, which uses some of the common methods to create a zip bomb, like repetition and nested .zip files.
M9jB TIL In 1991 two artists paid $26 million to install thousands of umbrellas along the California highway, one of the umbrellas was toppled by high winds, killing one woman and injuring several others. The exhibit was ordered closed and another person died during the removal of the umbrellas.
Ypr6P TIL During the 1905 Russian Revolution, the Tsar flirted with imposing a military dictatorship to avoid reform. When he asked Grand Duke Nicholas, a respected commander, to become dictator, the nobleman drew a pistol and threatened to shoot himself in the head if the Tsar further refused the reforms