Fresh fruit -- including pears, oranges, apples, grapes and melons -- on display at a stand in the Piazza Vittorio market. 

Fresh fruit -- including pears, oranges, apples, grapes and melons -- on display at a stand in the Piazza Vittorio market. 

Fresh potatoes and onions on sale at a stand in the Piazza Vittorio market. Country of origin is clearly marked on the signs indicating prices. 

Fresh poultry on sale at a stand in Piazza Vittorio. 

Fresh fish, shell fish and other seafood on sale at a stand in Piazza Vittorio market. 

TANZANIA 2004. Street vendors at the city center selling carrots and fresh ginger at the local market. 

Varieties of rice and beans on sale at a stand in Piazza Vittorio market. 

Potatoes on sale at a downtown market in Rome. 

A sweet potato displayed at a downtown market in Rome. 

A sweet potato displayed at a downtown market in Rome. 

Potatoes on sale at a downtown market in Rome. 

HUNGARY 2008. A shopper selecting fresh fruit at a local market in Budapest among fresh produce including peppers, bananas, grapes, oranges and other citrus. 

Vendors at a market in Kabul cleaning and shredding carrots for sale. 

A vendor at a market in Kabul selling a variety of vegetables. 

HUNGARY 2008. Customers passing a stand selling lettuce, cauliflower, onions, peppers, turnips and radishes at an open air market in Budapest. 

Potatoes on sale at a downtown market in Rome. 

Potatoes on sale at a downtown market in Rome. 

A vendor selling fruits and vegetables at a local market in Kabul. 

A produce vendor making a sale in the New Market, in Dhaka. 

Customers line up to buy fresh meat at a butcher's stall in Piazza Vittorio.