AdvertisementDiplomats And Lawyers Try To Define 'Culturally Acceptable Food'August 27, 2014Dan CharlesfacebookEmailTractors sit on a sugarcane plantation on the land of a Guarani-Kaiowá indigenous community in Brazil, where Oxfam has alleged "land grabs" unfairly take land from the poor. The United Nations is drafting voluntary guidelines for "responsible investment in agriculture and food systems" in response to such concerns. (Courtesy of Oxfam)