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TIL that in 2006, some army units used Silly String to check enemy encampments for trip wires. Before entering a building, soldiers would squirt the string across the room. If it fell to the ground, it was safe. But if it hung in the air, they knew the room had trip wires.

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W7159 TIL that the oldest undisputed depiction of a human (discovered so far) is the Venus of Hohle Fels from about 40,000 years ago. It is housed today in a museum in the small German town of Blaubeuren, close to where it was discovered.
9YbRX TIL what's a "retronym" being something retroactively renamed so it now makes more sense. Like how "analog clock" used to just be a "clock" before digital clocks and how "The Great War" was later renamed "World War I"
40Xo TIL Whale Fossils have been found on top of the Andes mountains
Egod TIL that in the United States, having child pornography often results in a harsher sentence than actually molesting a child would
PYAwZ TIL that, in 1874, a bill was introduced in the United States House of Representatives to pay Harriet Tubman $2,000 for services she provided the Union Army during the American Civil War as a scout, nurse and spy, but it got defeated in the Senate