Davao del Sur News: Friday, May 11, 2012- DENR-XI lauds Davao City for move to ban plastic bags: DAVAO CITY- The Department of Environment and Natural Resources in the region (DENR-XI) lauds the City Government of Davao for its move to completely, totally and absolutely ban the use of non-biodegradable and polystyrene foam as food and beverage containers effective June 28, 2012....More »