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TIL of immune privilege, where parts of your body that would be damaged by an immune response (inflammation, high temperature) work outside of your body's immune system, including your eyes and testes.

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Z88KD TIL of A dovecote or dovecot /ˈdʌvkɒt/ (Scots: doocot) a structure intended to house pigeons or doves. They generally contain pigeonholes for the birds to nest. Pigeons and doves were an important food source historically in Western Europe and were kept for their eggs, flesh, and dung.
wvKo TIL of the US Supreme Court decision Buck v. Bell where the Court approved the practice of forced sterilization of citizens the state deemed unfit, including the intellectually disabled, in order to to improve the human race by eliminating “defectives” from the gene pool.
xmOw TIL a local fisherman in Costa Rica nursed a crocodile back to health after it had being shot in the head, and released the reptile back to its home. The next day, the man discovered “Pocho” had followed him home and was sleeping on the mans porch. For 20 years Pocho became part of the mans family
jErQ TIL that adding 10,000 years to the AD year count (i.e. 12014 for this year) gives us the Holocene Calender. It is an estimate of the number of years since the Neolithic Revolution, which is considered to have been the birth of civilization.
LY4r TIL that the bottom of Converse “All Star” sneakers are covered with felt so that they classify as slippers, and therefore command a lower import tariff.