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TIL The 52-Hertz whale a.k.a. “The World’s Loneliest Whale” has a call that is much higher pitched than that of other whale species. It appears to be the only individual whale emitting a call at this frequency. It has been detected regularly in many locations since the 1980’s.

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L7rV TIL that last time when US president formally declared a war supported by Congress was in 1942. Everything since were conflicts without war proclamation.
Qgdk TIL In 1935, Sigmund Freud replied to a mother concerned about her son’s homosexuality by saying “ it is nothing to be ashamed of, no vice, no degradation, it cannot be classified as an illness” and “ It is a great injustice to persecute homosexuality as a crime, and cruelty too.”
0dAj TIL Uranus was originally called George’s Star.
9wre7 TIL these days. Today I learned the letter B comes after A
MbQK TIL 80,000 Inca warriors were defeated by only 168 Spaniards in the Battle of Cajamarca (outnumbered 450:1) in 1532