Climatic changes Global warming 288 Government policy 284 Environmental aspects 267 Economic aspects 212 Social aspects 212 Environmental policy 143 rhagor ... Effect of human beings on 115 Global environmental change 108 Political aspects 95 climate change 91 Environmental conditions 88 History 88 International cooperation 85 Greenhouse gas mitigation 79 Research 78 Climate change mitigation 75 Greenhouse gases 71 Law and legislation 68 Human ecology 66 Ecology 64 Sustainable development 63 Climate Change 59 Climatology 59 Human beings 55 Greenhouse effect, Atmospheric 53 Nature 51 Energy policy 49 Climate 47 Effect of climate on 44 llai ...