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TIL that France and Spain "went to war" over a few stop signs in the 1970s and 1980s when France built two new roads that crossed a Spanish road and installed new stop signs which Spanish citizens continually removed over and over again for years. This became known as the "War of the Stop Signs".

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VM4J4 TIL that one part of Operation Anadyr, the Soviet Deception plan preceding the Cuban Missile Crisis, involved giving Cuban exiles in the USA correct information on the shipment of nukes and missiles, guessing (correctly) that the CIA would perceive them as lies to encourage an invasion.
Ye5Z TIL that Bill Gates is offering $100,000 to the scientist who creates a next generation condom that “significantly preserves or improves sexual pleasure, in order to improve uptake and regular use”.
R7xo7 TIL: In 2017 Dr. Thatcher Cardon received $15,000 from NASA for winning the Space Poop Challenge. His prototype removes the waste from the space suit completely so astronauts don't need to take off their notoriously heavy, cumbersome, and uncomfortable space suits before going to the toilet
VBExk TIL that in fall when some tree leaves change color, the brown-red-yellow is actually their real color. The green was the chlorophyll used to absorb sunlight that is now broken down and reabsorbed into the trunk to save energy and reuse for next year's new leaves
D1eKD TIL Cutting sugar from kids’ diets appears to have a beneficial effect in just days study Says