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TIL United States is the only country in the world which applies the same tax regime to all its citizens, regardless of where they live

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P1eOw TIL earthworms are hermaphrodites. Each carries male and female reproductive organs. When mating, two individual earthworms will exchange sperm and fertilize each other's eggs.
XEoY6 TIL the low pressure and humidity on an airplane makes your senses of taste and smell up to 30% less effective, contributing to the poor reputation of airline food.
NXj7e TIL Sequoyah, an illiterate warrior of the Cherokee Nation, observed the "talking leaves" (writing) of the white man in 1813. He thought it was military advantage and created a syllabary for Cherokee from scratch in 1821. It caught on quickly and Cherokee literacy surpassed 90% just 9 years later.
QJyop TIL why we have two nostrils - different smells are detectable at different air speeds, so one nostril is always more open than the other to give us a wider olfactory range.
dVpE TIL Teddy Roosevelt is the only person to have ever received both the Nobel Peace Prize and the Congressional Medal of Honor, the two highest nationally recognized honors for war and peace.