History 196 Social aspects 190 Human genetics 168 Medicine 150 Human rights 134 Human ecology 121 Philosophy 108 Human engineering 77 Human-computer interaction 71 History and criticism 66 Psychological aspects 61 Cytology 60 Research 53 Political aspects 51 Human factors 48 Human geography 47 Human evolution 44 Life sciences 44 Methodology 41 Moral and ethical aspects 41 Politics and government 41 Psychology 40 Human physiology 37 Nature 37 Social conditions 36 Environmental aspects 35 Human body 35 Body, Human 33 Effect of human beings on 33 Human-animal relationships 32