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TIL Preparation H wanted to use Johnny Cash’s song “Ring of Fire” in their commercials

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PYZ0J TIL Prince released an album with Dave Chapelle dressed him from his show on the cover.
4k9JJ TIL that Postal codes in Slovakia and Czechia are inherited from Czechoslovakia and do not overlap. Czech part had areas starting from 1 to 7 and Slovak part had 8,9 and 0. Old system was good enough and there was no reason for authorities to change it after the countries separated in 1993.
Nr6Q TIL at normal speed, it takes a fully loaded supertanker/oil tanker approximately 20 minutes to stop, they cut their engines 15 miles away from the dock
EgoLo TIL Ignaz Semmelweis pioneered the habit of washing hands in hospitals but was rejected, had a mental breakdown and was sent to an asylum and was beat to death by the guards (XIX century)
emmk T.I.L. that a system called “Perimeter” aka. “Dead Hand” has been online in Russia since 1985. It’s designed to launch an all-out nuclear missile retaliatory attack, if it senses that Russia’s command systems have been attacked and/or shut down without proper authorization.