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TIL men walk significantly slower when walking with a woman, but only when that woman is their romantic partner. If she's a friend or acquaintance they go at almost full speed.

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5Ybkk TIL: Sperm whales can produce a sounds as loud as 230db, which is about 6db louder than the tsar bomba.
5oVk TIL Gemini & Apollo Astronaut Frank Borman was offered the chance to fly as commander of Apollo 11, the first moon landing, but decided to retire from NASA instead. He would have taken Armstrong’s place in history as the first man on the moon.
n1nb TIL that some airlines require a pilot and co-pilot to consume different meals from each other, in case one makes you sick
5Y0Nr TIL that Half of Americans wouldn’t be able to tell that a British person is calling them an idiot
7aPL TIL Isaac Asimov was such a prolific and wide ranging writer he had work published in all 10 major categories of the Dewey decimal system