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TIL Mango sap is caustic

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RN8 TIL the Molotov Cocktail is not Russian, despite the obvious Russian name. The petrol bomb was mass produced by the Finnish in the Winter War, and the term itself was coined to mock Soviet propaganda.
xBab TIL that there is an entirely independent food chain that lives deep in the ocean, that is effectively independent of sunlight, and these life forms are the leading candidates for extra-terrestrial life.
NAm6 TIL that the company that makes Buck Knives will custom heat treat knife blades sent to them by DIY knife makers.
kJAN5 TIL atmospheric rivers are typically several thousand kilometers long and only a few hundred kilometers wide, and a single one can carry a greater flux of water than the Amazon River.
BrWEk TIL 'US Radium' employed women to paint dials of watches with radioactive radium paint. The women were instructed to point their brushes on their lips. This led to many of the workers' losing their jaws and even deaths. Company paid examiners covered it up and claimed they had syphilis.