This file photo taken on September 16, 2009 shows a dredger flushing water from the River Niger near Lokoja in the Kogi State, to boost navigation...
Dead fish floats by as fishermen work near drainage pipes flushing sewage from an oil and gas exploration well debacle October 6, 2006 in Sidoarjo,...
Dead fish floats by as fishermen work near drainage pipes flushing sewage from an oil and gas exploration well debacle October 6, 2006 in Sidoarjo,...