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TIL in the Red Sea, giant moray eels have been observed hunting cooperatively with coral groupers. The grouper approaches an eel's hiding place and shakes its head rapidly to indicate that it wants to hunt. The eel recognizes the signal and accompanies it on the hunt where they work in tandem.

m1mEv TIL that Henry Ford refused for years to make any significant improvements to the Model T. When his designers surprised him with a new prototype, he destroyed it in front of them with his bare hands.
PYw7n TIL in the early 1900’s, Idaho potatoes were used only for hog food until a railroad superintendent found that they were delicious when baked. Celebrity endorsements, a song and a 40ft potato shaped sign (with electric winking eyes) soon followed and the "baked" potato became mainstream fare.
KaQ6 TIL The reason many critics say the James Joyce novel Finnegan’s Wake is nearly “unreadable” and “incomprehensible” is because it’s an attempt to recreate the experience of sleep and dreams.
OxnX TIL that, in July 1996, a British nursery teacher saved a classroom of children from an attacker with a machete. She was awarded with the George Medal, the second-highest honour that a civilian can receive, the following year.
QNG8d TIL Iranian general Fathollah Minbashian was fired by Shah Pahlavi for being too resistant to foreign interests. After the Shah was overthrown, he offered to serve the new Islamic Republic, but they refused and ironically demanded that he report for the crime of collaborating with foreign powers.