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TIL pronunciation of the letter “H” as either “haytch” or “aytch” was a sign of what religion you belonged to in Ireland (Catholic vs Protestant respectively)

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X0Qxr TIL that due to time dilation at relativistic speeds, a human in a spaceship accelerating at a constant 1g could travel the diameter of the milky way in 12 years from their perspective. To an observer on earth, they will have traveled for 113,000 years.
b9DLj TIL instant coffee pods are ruining the environment because they’re not recyclable. And it’s all due to the company themselves.
e0omb TIL about the 13,500 year old Grotte du Bichon man of Switzerland, whose remains were found intermingled with a wounded brown bear and charcoal. This indicates that he tried to force the bear out of the cave by fire to slaughter it, but in turn was killed by the dying animal.
GARng TIL dyslexic World Memory Champion Dominic O’ Brien set a Guinness World Record by memorizing 2808 playing cards (54 packs) after looking at each card only once. He made only 8 errors.
78QXO TIL there is a 120 meter wide circular island in Argentina which continuously rotates