How many more people?
D001723:Birth Rate; D003362:Cost-Benefit Analysis; D003906:Developing Countries; D004463:Ecology; D005193:Family Planning Services; D005502:Food; D033161:Government Regulation; D006801:Humans; D007391:International Cooperation; D038622:Internationality; D011155:Population Control; D011640:Public Policy; D012922:Social Change; D012926:Social Control, Formal; D012940:Social Problems; D012959:Socioeconomic Factors