Economic aspects Environmental policy -- Environmental aspects 4 Economic development -- 2 Sustainable development 2 Air -- 1 Economic aspects -- 1 more ... Economic policy -- 1 Envcironmental policy -- 1 Environmental risk assessment -- 1 Global warming -- 1 Government policy -- 1 Greenhouse gases -- 1 International cooperation 1 International trade -- 1 Political aspects 1 Pollution -- 1 Sustainable development -- 1 less ...