Climatic changes Government policy 55 Economic aspects 49 Environmental aspects 49 Social aspects 31 Environmental policy 27 Climate change mitigation 23 Law and legislation 22 International cooperation 18 Global warming 17 Sustainable development 15 Energy policy 13 Changements 12 Climat 12 Political aspects 11 Economic development 10 Effect of human beings on 10 Environmental conditions 9 Global environmental change 9 Sustainability 9 Climate change 8 Climatic factors 8 Carbon dioxide mitigation 7 Climatology 7 Greenhouse gas mitigation 7 Water-supply 7 Environmental economics 6 Greenhouse gases 6 Human ecology 6 Meteorology & Climatology 6