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TIL that in the early 1940s a Mexican scientist named Guillermo Gonzalez Camarena created a color television system some considered better than any American system at the time. His work made it possible in the 1970s for NASA to transmit color photos of Jupiter from the Voyager satellite.

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YporG TIL There is an exact scale replica of the Parthenon of Athens. Located in Nashville, the building was originally constructed of brick, plaster and wood slats in 1897 as part of an exhibition celebrating 100 years of Tennessee. In 1920, it was rebuilt with durable materials becoming an exact copy.
mxKpO TIL that the United States had marched into the heartland of Mexico and occupied the capital city of Mexico during the Mexican-American war
0wvgp TIL that the head of the German Nazi Intelligence service, Wilhelm Franz Canaris, deeply trusted by Hitler himself, had quietly worked to sabotage the Nazi war effort from the very first day, likely saving Western Europe.
loZeA TIL in 2014, Ice Cube got his name on an actual Goodyear Blimp. But it didn't read "Ice Cube's a Pimp". It read "IT'S A GOOD DAY." instead.
MX8a TIL a stray dog in Afghanistan saved 50 American soliders. A Facebook group raised $21,000 to bring the dogs back to the US and reunite them with the soldiers.