"Fertilizer's modest impact on the environment" "FAO consultation on food security and nutrition" "Urea shortage hitting Pakistani farmers" "Crops with deeper roots capture more carbon" "India: towards reducing fertilizer subsidy" "Nitrogen in soil helps clean the atmosphere" "World Bank calls for strong policies on food security" "Examining nanotechnology for the recovery of phosphorus" "Soberanía alimentaria: una respuesta europea a la crisis"