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TIL Approximately 95% of the world population has a natural immunity to leprosy

Read more leprosy.org

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AN0r4 TIL sore muscles a day after a workout are not caused by lactic acid build up. It's called DOMS, delayed onset muscle soreness, and it's mainly general inflammation and microdamage.
ADGaw TIL Joesph Kennedy father of JFK once started film companies in Hollywood, had an affair with Gloria Swanson, only to blow it all up and bow out of Hollywood less than a decade later.
pY9Xe TIL that prior to human settlement, the only land-based mammal on Iceland were arctic foxes.
VMo08 TIL Dick Cavett did not realize he was in the movie Apollo 13 until he was at the theater watching it and saw himself.
oBP8E TIL when the SR-71 was retired in 1990, it went ahead and set four new world speed records on its way to the museum.