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TIL about 1 in 20 people sleep with their eyes open

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VBYWQ TIL In 2010, the Russian Navy ordered the repair of a nuclear battlecruiser at a cost of $11 million dollars. Prosecutors later revealed that the actual cost of this work should have been $8 million and the other $3 million was stolen. As was discovered later, no repair work was carried at all.
5VeYr TIL Kowloon Walled City was notorious for drugs and crime but many of its 50,000 residents lived their lives peacefully until it was demolished in the early 90s
Wg7B TIL Scientists in the South Pole have a tradition of sitting in a sauna and then running outside naked to the ceremonial pole and back. They can go from a 200° F sauna to -100° F outside. They have to do it fast enough before frostbite on essential reproductory equipment. Not all are successful.
4jea TIL that South Africa is the only country in the world to independently develop nuclear weapons and then give them up: 6 finished warheads were dismantled in 1989.
W7ox4 TIL the ancient Nazca got water in the middle of the desert through an engineered series of 46 aqueducts running 12 m underground. They were built around 200-500 AD, and 32 of them are still used by local farmers today