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TIL That a large undigested lump of chewing gum in your stomach is called a "Bezoar"

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YpAMA TIL that the closest living relative of all whales is the hippopotamus. Whales evolved from a terrestrial(land) animal, this is the reason whales can't breathe under water like fishes and need to come up for air. They literally evolved backwards, but in the process have the become the largest mammal
RQ0w TIL - If you open up a cocoon, you would not find a butterfly caterpillar hybrid. You would find butterfly goo. A caterpillar completely digests and rebuilds itself.
DQ8EY TIL that the country with the most pyramids is Sudan
ROb1 TIL that the first female doctor in Britain spent 56 years disguised as a man. It wasn’t until after her death in 1865, that the doctor’s secret was finally discovered.
nlar TIL there may exist objects in our Universe that behave just the opposite of a black hole (a white hole). They cannot be entered from the outside, but matter and light can escape. The Big Bang might have been a white hole itself, and big bangs possibly occur at the center of all black holes.