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TIL the "whistling" noise used to indicate bombs falling in movies and TV shows is almost always the wrong way round. Anyone underneath a bomb that made such a sound (only specific WW2-era bombs) would hear the pitch increasing as it got closer, not decreasing, due to the Doppler effect.

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oQvW TIL I learned that the son of a high ranking DPRK diplomat who recently defected was an avid CounterStrike player and had the handle “North Korea is Best Korea”
N44b TIL William Whipple, upon signing the Declaration of Independence, freed his slave believing he could not fight for liberty and own a slave.
4oMJ TIL Google has found GPA’s and test scores to be “worthless as a criteria for hiring”; they have teams where 14% of their employees haven’t gone to college
pYeX8 TIL that President William McKinley always wore a red carnation for good luck but sometimes gave it out as a memento. When greeting the crowd in 1901, he handed a 12-year-old girl, Myrtle, his the bloom off his lapel. Minutes later, he was fatally shot by a man in the crowd.
dDyE TIL Marshall Field, the #11 richest American of all time (66 billion) coined the phrase “the customer is always right” and was the first to accept exchanges and openly display prices.