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TIL that some Paramecium contain kappa particles. These are actually symbiotic bacteria that produce a toxin that kills Paramecium that lack kappa particles.

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m1LjO TIL Beethoven kept his hearing loss a secret. He once wrote(but never send) a letter to his brother confessing it and explained that people mistakenly thought he was antisocial: he longed for human contact but became a recluse out of shame for his condition and all this made him contemplate suicide
R5Djw TIL there’s no iced tea in Long Island iced tea.
aw00Z TIL that in medieval years, an hour was divided into 4 puncta (quarter-hours), 10 minuta, or 40 momenta. So if you asked someone to "wait a moment", turns out that you really asked them to wait for about 90 seconds.
RLDa TIL a man walked 7 years straight, from the tip of South America to the northern coast of Alaska, a journey totaling 19,019 miles, a record for the longest continuous walk in human history.
6dvl TIL that Oregon’s entire coastline is public land: “The Oregon Beach Bill decreed that all land within sixteen vertical feet of the average low tide mark belongs to the people of Oregon and guarantees… free and uninterrupted use”