A boy sells aprons at the "La Terminal" market in Guatemala city August 13, 2007. The sprawling Terminal market is the one of the largest in Central America, a maze of thousands of stalls selling everything from cow livers to scrap metal. Hundreds of children work day and night in the market with few opportunities for a proper education. One organization called PENNAT is providing the child workers a flexible curriculum inside the market itself with classes adapted to their schedules. REUTERS/Daniel LeClair (GUATEMALA)