International cooperation Sustainable development Environmental policy 18 Environmental aspects 11 Economic aspects 9 Government policy 9 Economic development 8 more ... Environmental protection 8 Conservation of natural resources 6 Economic assistance 6 Environmentalism 6 Management 6 Environmental law, International 5 Law and legislation 5 Prevention 5 Social aspects 5 Natural resources 4 Poverty 4 Climatic changes 3 Common good 3 Environmental economics 3 Globalization 3 International economic relations 3 Public interest 3 Public-private sector cooperation 3 Research 3 Social responsibility of business 3 Agriculture 2 Citizen participation 2 Cooperation 2 less ...