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TIL the use of OMG is over a hundred years old

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MLWa TIL it is illegal to smoke in cars with children in Arkansas, California, Louisiana, Maine, Oregon, Puerto Rico, Utah and Vermont. The minimum age of the child varies according to the state.
w08o TIL: A drilling company in Louisiana accidentally caused a sinkhole in a lake. The resultant whirlpool sucked in the drilling platform, eleven barges, many trees and 65 acres of the surrounding terrain.
E1JYo TIL Russia developed the Istrebitel Sputnikov (IS). The IS, launched via ICBM, would maneuver to within a 1 km of a target satellite and detonate onboard explosives. The IS was tested approximately 20 times between 1963 and 1982, with several confirmed satellite kills.
7wKX TIL: Inspired by the character Lt. Uhura, Mae Jemison joined NASA and became the first African American woman in space, then later became the first real astronaut to appear on Star Trek.
8aL68 TIL the flag patches on a soldier’s uniform are reversed to mimic a real flag that if being carried into battle would flow backwards in the wind when marching forward into battle. If it were displayed normally it would look like the soldier was retreating.