DES MOINES, Iowa — Former presidents of Ghana and Brazil will receive the World Food Prize for their successful efforts to reduce by half the number of people in their countries who suffer from hunger and poverty, the prize's foundation announced Tuesday.John Agyekum Kufuor, who served as Ghana's president from 2001- 2009, and Luis Inacio Lula da Silva, who was Brazil's president from 2003-2010, were named this year's World Food Prize laureates during a ceremony in Washington.Read More... More on Hunger