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TIL most world languages don’t distinguish between blue and green

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M7VQB TIL The word "white" in the name "white rhinoceros" is often said to be a misinterpretation of the Afrikaans word wyd (Dutch wijd) meaning wide, referring to its square upper lip, as opposed to the pointed or hooked lip of the black rhinoceros.
Z8PKG TIL that an organism capable of producing oxygen without light was discovered in 2010. Unlike plants, algae and some photosynthetic microbes who all require light, Methylomirabilis oxyfera releases oxygen even in complete darkness.
grOGD TIL about the Schienenzeppelin, a train powered by a rear-mounted propeller similar to a helicopter, capable of reaching 140 km/h (87 mph). Designed in 1930s Germany, it was intended to be a futuristic mode of transportation but never entered service due to technical issues and WWII
PYKw TIL That a gas cloud will get too close to the Black Hole in the center of our galaxy next year, and we’ll see it ripped apart.
kJk6B TIL of US Congressman Francis E. Walter, who during WW2 decided to present President Roosevelt with a letter-opener made from a bone in the arm of a Japanese soldier