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TIL the only reason people in the US spell aluminium as aluminum is because Charles Martin Hall, the developer of the metal’s refinement process, misspelled it on one of his advertisements.

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woE81 TIL some moth caterpillars make sounds to avoid being eaten or tasted. They are among animals that advertise or signal to potential predators they are not worth attacking through colours, sounds, odours, or other characteristics that warn about being unpalatable or poisonous
R5nZj TIL that mountain lions kill animals much larger than they can eat in a sitting, because other predators (wolves, bears, etc) will inevitably steal their prey. These carcasses become complete ecosystems to several insects who travel from carcass to carcass.
j6AvE TIL Humans did not evolve from monkeys. Humans and monkeys share a common ancestor from which both evolved separately.
awWbA TIL Friederike Bruning visited India in 1978 to look for a guru, but ended up staying after buying a cow at a neighbor’s insistence. She started a cowshed for abandoned animals and has since saved over 1,800, earning the name “Sudevi Mataji”.
oNwK TIL that the good comeback you think of after an argument, but it’s way too late, is called “L'esprit d'escalier” or “staircase wit”.