Coupons were introduced in 1894 when Asa Candler bought the Coca-Cola formula for $2,300 and gave people coupons that he had written out to receive a free glass of coke.

Soaking beans for twelve hours in water before they are cooked can reduce flatulence caused by beans.

The most valuable painting made by a female artist is "In the Box," painted by Mary Cassatt. It was sold for $3.67 million at Christies in New York City.

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