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TIL space smells like burnt steak. Astronauts have also reported space to smell metallic, or like gunpowder. Others have hypothesized that it could smell like raspberries.

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p8DG4 TIL of the sitdown strike from 36’-37’ which an organized group of workers, usually employed at factories or other centralized locations, take unauthorized or illegal possession of the workplace by "sitting down" at their stations. Costing GM close to 3 billion in today’s market
6Eyn8 TIL The Officers That Made the Watergate Arrests Were Dressed as Hippies Because They Had Just Been Undercover to Find Drug Dealers
0loA TIL the Titanic’s coal stores had been burning for weeks before she set sail, damaging the starboard side of the ship where the iceberg hit. There was not only a cover-up, but evidence that the fire damaged the hull enough to be a large contributing factor to why the iceberg caused such damage.
ANYMo TIL Honeybees use a waggle dance to tell others where to find food. The distance other bees must travel to the food source relates to the length of time it takes the bee to fly in one full circuit. The angle at which the bee flies in relation to the sun shows the direction of the food source.
ZplmQ TIL on Station Island in Ireland, St. Patrick was reputed to have found a cave that was a literal entrance into Purgatory. For hundreds of years, pilgrims travelled to the island and would spend the night in the cave, many of whom later emerged with fantastical tales of what they'd seen inside.