
It would be the third spike in food prices in the past five years.
Previous hikes - during 2007 and 2008, and again in 2010 and 2011 - triggered riots and social instability in dozens of countries around the world.
Whether rising food prices will again trigger unrest is unclear, especially since different crops are affected.
Crops shrinking
Despite early predictions of a record maize crop, estimates have plummeted after a string of record-high temperature days and dry conditions stretching across the farm states of the U.S. Midwest.
"We need rain, and it doesn't look like we're going to get it," says Iowa State University economist Dermot Hayes.










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