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TIL that captive octopuses require constant mental stimulation in order to prevent them from becoming lethargic

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x6E60 TIL on 1856, William Henry Perkin discovered mauveine (one of the first synthetic dyes) while attempting to synthetize quinine
gMPJ8 TIL about the Moro people in the Philippines. These people have been at war for their independence for over four centuries, fighting the Spanish, the Americans, the Japanese and the current Philippines government.
nWarb TIL Russia has over 2,500 nuclear generators scattered throughout its countryside
P10We TIL Both VISA and SAAB are examples of recursive acronyms, acronyms that refer to themselves. VISA stands for "Visa International Service Association" and SAAB stands for "Saab Automobile AB."
Br8VL TIL about "Sgt. Bill", a man who claimed to be a DEA Agent and conducted raids on meth labs and made 20 arrests in the small town of Gerald, Missouri. However, it transpired that he was lying, and was an ex-convict, bankrupt and unemployed. However, he actually succeeded in getting rid of the meth.