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TIL in 1970 one monkey's head was transplanted to the headless body of another monkey. Although the monkey was now paralyzed from neck down, they could still hear, smell, taste, eat and follow objects with its eyes. Died in 9 days because of immune rejection.

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mxJ8O TIL that the Catholic Church is the largest non-government provider of education and medical services in the world.
9gD7 TIL that Hookah Sickness, or the dizzying feeling experienced after smoking, is likely due to carbon monoxide poisoning.
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