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TIL That most paper sizes are rectangular (A series) is because it is made with a special mathematical property. If you cut it in half on the long side you get two rectangles that are smaller versions of the original.

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WkBlo Today I learned Malcolm X and Martin Luther King Had two different paths. MLK was about protesting and assimilating into white culture and Malcolm X was about Just being proud to be black. Both were assassinated. MLK by a white man, and Malcolm X by his own people.
QaXd TIL Facebook CEO Mark Zuckerberg Donated $992 Million to Planned Parenthood
Kjww TIL ‘Smokers Express’ was an idea for a smokers airline. They would’ve encouraged smoking with free cigarettes, full-size ashtrays, free headsets, serving hamburgers, pizzas and steaks. It never took off.
oBYA7 TIL that the dog breed Labrador comes from the Canadian Labrador peninsula which in turn comes from the name of the Portuguese explorer João Fernandes Lavrador which means "plower"
vLmx TIL adult Luna moths have no mouths, they live off the energy they stored as a caterpillar