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TIL that the modern day American flag concept was created by a 17 year old for a school project. He received a B- and was told if congress accepted the flag, his grade would be reconsidered. When congress accepted the flag’s concept, the teacher then changed his grade to an A.

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v1YR7 TIL if you have a bar with a gang problem they'll be gone within three weeks if every third song played is from a female vocalist, according to Jon Taffer from Bar Rescue.
69Xv7 TIL that Ranch dressing was invented in Alaska, by a plumber trying to keep his employees satisfied with his cooking
W7RgN TIL "Greeble" is the name given to the texture applied to Sci-Fi spaceship models for the purpose of making them appear more complex.
6X9W TIL Finland’s nuclear waste bunker Onkalo is built to last intact till the year 102,120. Work began in the year 2004 and it will be closed in 2120s. This bunker will probably be one of the last remains of humankind on Earth.
NXEDJ TIL that, while it has no means of propulsion (which would risk distorting the results of its measuring instruments), the RV FLIP can sink partially vertically, to be submerged in the manner of a platform to study undersea sound waves. Its upright position suggested that it had sunk.