Man Influence on nature 31 Origin 10 Congresses 8 Life 7 Civilization 6 Environmental policy 6 Evolution 6 Influence of environment 6 Philosophy 6 Social sciences 5 Ecology 4 Environmental protection 4 Human behavior 4 Human ecology 4 Study and teaching 4 Bibliography 3 City planning 3 Natural resources 3 Philosophy, Modern 3 Self (Philosophy) 3 Social ethics 3 Act (Philosophy) 2 Anthropology 2 Antiquities 2 Conservation of natural resources 2 Cosmology 2 Cybernetics 2 Economic geography 2 Environmental aspects 2