A boy lies under a table of radishes during an urban "Barter Market" at the Monument of the Revolution in Mexico City, August 11, 2013. The market, part of a citizen programme launched by the Ministry of Environment to raise awareness of waste accumulation, uses mock money which is earned by "selling" objects like glass, cardboard, used computers and mobiles phones. People can then exchange the mock money for food, plants, school supplies, and other miscellaneous objects. REUTERS/Edgard Garrido (MEXICO - Tags: SOCIETY ENVIRONMENT)