Daniel_Stuckey writes: Two years ago, the New England Complex Systems Institute published a famous paper that sussed out the mathematical correlation between food prices and unrest: Every time food prices breached a certain threshold, riots broke out worldwide. That all-important threshold is about 210 on the FAO Food Price Index... In May 2013, right before millions of angry Egyptians took to Tahrir Square, the index was at 213. For most of the spring, it had hovered well above 210, meaning that food was prohibitively expensive for Egypt's poor for a full three months before people took to the streets in dissent. And sure enough, food acces is a crippling problem in Egypt even today. UPI reports that "Bassem Ouda, the minister of supplies in the government of President Mohamed Morsi—who was ousted by the army July 3—admitted last week the state has less than two months' supply of imported wheat in stock, or about 500,000 metric tons."