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TIL On average, genetic similarity between any two humans is 99.9%. There is about 2–3 times more genetic diversity within the wild chimpanzee population, than in the entire human gene pool.

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WgLB TIL that the first African American elected to state office in Texas after the Civil War was also a democrat, a woman, and a lesbian.
695G7 TIL That the concrete used by the ancient romans has self healing properties, can last thousands of years and can make construction more environmentally sustainable
VMOeB TIL that Arby's is a creative misspelling of the founders' name: Raffel Brothers and NOT Roast Beef which is commonly assumed.
yVAL8 TIL The Typical U.S. Home Changes Hands Every 13.2 Years
drnK TIL the film ‘Top Gun’ was made in collaboration with the Pentagon, enlistment spiked when it was released, the Navy set up recruitment tables at theaters playing the movie, and polls soon showed rising confidence in the military.