Manioc roots of various shapes and sizes are displayed in a supermarket in Sao Paulo, Brazil, Monday, Dec. 17, 2012.  Grown in some 80 countries worldwide and known internationally as yuca, cassava or mogo, manioc has its origins in Brazil: It was the main food source for indigenous tribes since before the discovery of the New World. Even now, manioc remains an important source of carbohydrates, especially among Brazil&#x27;s working class, who grind it into a rich, nutty flour or deep-fry it into greasy fries. (AP Photo/Andre Penner)
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