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October 25, 2013
Q. How much “hidden water” is there in a hamburger, a cup of coffee, a piece of chocolate?
A. That's the water used to produce consumer items not typically thought of as containing water, says Stephen Emmott in “Ten Billion.” Take a hamburger, for example. By the time the cow is fed and processed as meat, it takes almost 800 gallons of water to produce that one burger. With roughly 21 billion burgers eaten each year in the U.S., that's 16 trillion gallons of water!
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