Speculators in the agricultural commodities markets are forcing grocery prices to rise too quickly and erratically, according to some top economists marking World Food Day on Sunday.
"Excessive financial speculation is contributing to increasing volatility and record food prices, exacerbating global hunger and poverty," wrote 461 economists, from more than 40 countries, in an open letter.
The United Nations chief torture investigator said the United States was violating U.N. rules, after the country denied him unmonitored access to Bradley Manning, the Army private charged with leaking among other things classified diplomatic cables to WikiLeaks.
Agriculture is topping the G-20 agenda for the first time as agriculture ministers from the world's largest economies gather in Paris beginning Wednesday.
Ever since a dramatic spike in world food prices in 2008 sparked panic and deadly riots in countries across three continents, agriculture and food security have become issues of global, political importance.
And crop shortages this year have some experts already predicting another rise in grain prices like that of 2008.