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TIL: If a persons body odor smells good to you they have an immune system opposite of yours. This happens so the chances of finding a mate with the opposite immune system is greater and the chances that any offspring you produce together will have a stronger immune system is greater.

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AD9Rn TIL that the feral hog population in Texas is so bad that they'd have to kill 70% of all existing hogs each year in order to keep it from getting worse
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GYaxG TIL that there was a Slavonic sect whose members had a widespread worship of Napoleon, believing that Napoleon is still alive and hiding in Irkutsk, Russia, gathering an army to return and conquer the world
GAKg5 TIL that male Ohio residents have to pay out-of-state tuition fees at Ohio universities if they aren’t registered with Selective Service, and some states like Alabama and Tennessee won’t admit men into state colleges at all if they haven’t registered.