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TIL that there are giant concrete arrows placed every 10 miles across the U.S., stretching from New York City to San Francisco. They were originally built to help USPS airmail pilots navigate coast-to-coast before modern instruments made visual navigation obsolete.

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KRnJ TIL It is illegal to use native bird species for commercial purposes, and that is why in Hollywood movies birds are often “wrong” species.
LJYd TIL that during the Great Famine, Ireland continued to export enormous quantities of food to England. This kept food prices far too high for the average Irish peasant to afford and was a major contributing factor in the large death toll from the famine.
MjaB TIL in 2000, due to a Disney DVD “duplication error”, the Toy Story Ultimate Toy Box Set shipped to Costco Stores contained scenes from the R-rated romantic comedy movie “High Fidelity” inserted at a random point during Toy Story 2, in which the word “fuck” is used twice by John Cusack.
8a1Kb TIL about Bone Music. In the USSR, Western music was banned, so bootleggers made and sold records out of old X-rays that preserved the bone patterns.
apBL TIL American forces leveled much of the ancient city of Babylon during the Iraq war in order to build helipads and heavy vehicle parking lots.