Environmental aspects Climatic changes -- 26 Climatic changes 19 Economic aspects 10 Economic development -- 10 International trade -- 8 Environmental policy -- 6 more ... Social aspects 6 Environmental policy 5 International cooperation 5 International economic relations 5 Sustainable development 5 Political aspects 4 Developing countries 3 Economic policy 3 Free trade -- 3 Globalization -- 3 International relations -- 3 Climate changes -- 2 Developing countries -- 2 Economic conditions 2 Energy policy -- 2 Environmental law, International 2 Foreign relations 2 Globalization 2 Government policy 2 Sustainable development -- 2 Armed Forces -- 1 Biological warfare 1 Biological weapons -- 1 less ...