Philosophy of nature Philosophy 50 History 30 Human ecology 29 Nature 21 Ecology 15 Science 14 more ... Environmental ethics 12 Religious aspects 9 Effect of human beings on 8 Human beings 6 Moral and ethical aspects 6 Naturalism 6 Social aspects 6 Indigenous peoples 5 Necessity (Philosophy) 5 Religion and science 5 Cosmology 4 Effect of environment on 4 Environmental conditions 4 Environmental protection 4 Indian philosophy 4 Natural history 4 Botany 3 Christianity 3 Deep ecology 3 Essentialism (Philosophy) 3 Human-plant relationships 3 Nature and civilization 3 Ontology 3 less ...