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TIL that prior to human settlement, the only land-based mammal on Iceland were arctic foxes.

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KY89B TIL that the genetic traits that helped people survive the Black Death in the 14th century are linked to autoimmune diseases like Crohn's disease today, showing how a historical pandemic shaped the evolution of human immunity genes.
9Ye5Q TIL that while 4-8% of people have at least one food allergy, a large proportion of people in developed countries believe they have food allergies when they actually do not have them.
R1bj TIL During the “secret war” waged by the U.S. Central Intelligence Agency (CIA) from 1964 to 1973 against communist and nationalist forces in Laos, more bombs were dropped on this rural nation of poor farmers than all the explosives dropped on Germany and Japan in the Second World War.
neE0b TIL Tom Dickson, the "Will it Blend?" guy, had his blender jar design ripped off by Vita-Mix. He took them to Federal court, won, and was eventually awarded $24M
wL7rW TIL John F. Kennedy took a teenaged White House intern's virginity on Jackie Kennedy's bed