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TIL “Cluster Headaches” are devastating headaches that can drive people to suicide and a common treatment for many are ingesting psychedelic mushrooms.

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PWWV TIL “head over heels” was originally “heels over head,” which makes a lot more literal sense
P1gWV TIL contrary to popular belief, Chanel No. 5 wasn’t Marilyn Monroe’s favourite perfume. Monroe also had a secret adoration for "Floris Rose Geranium" perfume, which was delivered in bulk to her at the Beverly Hills Hotel under a cloak and dagger alias during the filming of "Some Like It Hot".
OonkX TIL that even though the wheel is often citied as man's original invention... it wasn't invented until after flutes, baskets, woven cloth, and even boats
8a6R8 TIL that in the 1952 polio epidemic in Denmark, mortality was over 85 per cent due to a shortage of respirators. Dr Bjorn Ibsen invented a new kind of ventilator, proved it worked and then recruited thousands of volunteers to hand-pump them for weeks (they were fully manual). Mortality fell to 26%.
OGxme TIL there is a news maxim called, "Betteridge's Law of Headlines" that basically states any headline that ends in a question mark can be answered, "no".