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TIL that our oxygen doesn’t come from only trees. In actuality, about 70% of earth’s oxygen comes from the oceans (mainly small marine organisms called phytoplankton).

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8WW4 TIL Another assassination attempt to kill Hitler and high Nazi officials were made with explosive devices in the assassins coat pockets on a 10 minute timer during a tour, but failed due to Hitler leaving early only to give the assassin a few seconds to defuse the bomb before exploding
OoL0a TIL: John Landis, director of movies like Beverly Hills Cop III and coming to America, was found not guilty of manslaughter, after an actor and two children were decapitated by a falling helicopter during the filming of the Twilight Zone movie.
QJkVE TIL the etymology of the word "clue" is from a Greek myth, when Theseus enters the Labyrinth to kill the Minotaur (a half-man, half-bull). He unraveled a "clew" -a ball of string- behind him, so he could find his way out of the labyrinth. "Clew" was mispelled overtime, but kept its symbolic meaning.
evMn TIL trains are terrible at going uphill. The steepest incline in England is 1.5° and trains need additional engines pushing in the back to help climb it.
xVW4w TIL legend has it that Franciscan padres who founded California’s missions brought mustard seeds from Spain and scattered them along the road that connects their missions. Since mustard is an invasive species, it created a trail of bright yellow flowers that the padres used to mark the road.