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TIL that all Scottish fold cats are descended from a single barn cat named Susie. A local shepherd found Susie and started a breeding program in 1966. Susie's, and her descendants' iconic floppy ears are actually a sign of a painful genetic disease where the cat's cartilage is weak.

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a8GwM TIL of the "Variable-Incidence" wing solution to increase angle of attack during take-off and landing without hindering pilot visibility of the runway. It works by moving the entire wing up/down like one was shrugging their shoulders. The F-8 "Crusader" from the late 50s is an iconic example.
QJv6E TIL the Aral Sea - formerly the 4th largest lake on Earth - no longer exists; the rivers that once fed it were diverted in the 1960s for Soviet irrigation projects. The polluted seabed is known today as the Aralkum Desert.
d8oMB TIL that the famous biblical saying "it is easier for a camel to go through the eye of a needle..." is a translation error passed down for centuries: the choice of "camel" was a Greek misspelling and kamêlos (camel) was written in place of kamilos, meaning "rope" or "cable".
Rd6Q TIL after a two year study in India it was found that over 60% of a Indian men’s penises are too small for the standard international condom. Creating a 20% failure rate.
GYVjJ TIL that on the show Breaking Bad, the color wheel has an enormous impact on the outfits that each character wears. Essentially, the color yellow represents the drug trade on the color wheel. The closer a character is to the meth trade, the closer the color they wear is to yellow.