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TIL that because of the musical "Hamilton", more people visited the grave of Alexander Hamilton in 2015 than in the previous 212 years since his death. Many of those visitors came having just seen the musical on Broadway, or en route to do so.

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8aEDG TIL American Spirit Cigarettes, despite claiming to be additive-free, add ammonia or urea to increase free-base nicotine absorption to 36 percent.
6Lll TIL Iran has one of the largest rates of brain drain in the world. It’s estimated that 150,000-180,000 specialists leave the country every year, costing the country at least $50 billion in human capital annually.
Lmy0 TIL: Loopholes were small slits in castle walls that let archers fire arrows, and the modern use of the term reflects the apparent contradiction between the intent of an impenetrable wall and having small holes in it that allow defenders to gain an advantage
GYPMj TIL That to run for President of France you need a bank account
4X9w5 People like to imagine that they’re the pinnacle of evolution, but the animal kingdom suggests otherwise. The discovery that bumblebees use hair on their legs to detect a flower’s electromagnetic field offers another reminder that human senses don’t always measure up. You share the planet with creatures that can smell veins, see colors you can’t imagine, and communicate through their feet. Here are just a few animals with senses sharper than yours.