› added 2 years ago

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TIL that any object moving through water, no matter the speed or shape, creates a "Kelvin Wake" that is angled at precisely 19.47 degrees with respect to the direction of motion.

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e0Wb5 TIL that Longyou Grottoe, which are no less than 2,000 years old, represent one of the largest underground excavations of ancient times. Scientists from around the world have absolutely no idea how they were built, by whom, and why.
OGV71 TIL that the $8B nail salon industry—and its prevalence of Vietnamese proprietors—can be traced back to Tippi Hedren, the famous leading actress from "The Birds" and "Marnie"
YpvkP TIL of toy swapping. The act of buying a new toy and put an old/broken one in it's packaging which is returned for a refund.
b98BZ TIL that Golden Crisp cereal is still called Sugar Crisp in Canada
kOYEd TIL Coca-Cola approved the use of their famous polar bear ad in the film Natural Born Killers without knowing what it was about, and were furious when they found out