Toward a livable future.
D002947:Cities; D003906:Developing Countries; D018534:Earth, Planet; D017753:Ecosystem; D004787:Environmental Pollution / Q000191:economics; D005544:Forecasting; D006801:Humans; D009792:Oceans and Seas; D011158:Population Growth; D013660:Taxes; D014197:Trees; D014876:Water Pollution