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TIL in 1881 Listerine mouthwash distributor agreed to pay royalties to it's inventor and still pays his family, for some 141 years for now

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ADbLa TIL carnivorous pitcher plants’ orifice features a prolonged concave structure which acts as a multidirectional ultrasound reflecting bats’ echolocation calls
0dN51 TIL The Moon recedes away from Earth at roughly the same speed as fingernail growth (3.78cm/year)
7rMNO TIL that Marie Curie was buried in a lead-lined coffin (although it remains uncertain, if this was because of concerns over her radium contamination)
6pLm TIL that tooth enamel, the hardest and most mineral dense substance in our bodies, is primarily composed of dense rods of hydroxyapatite crystals.
WkKnd TIL Pineapples are multiple fruits.