Sociology 19 Archaeology 10 Research & information: general 9 Technology: general issues 9 human 9 History of engineering and technology 8 Ethnic studies 7 Sociolinguistics 7 Artificial intelligence 6 Central government policies 6 Climate change 5 Development studies 5 Economics 5 Education 5 Environmental management 5 Environmental science, engineering & technology 5 Gender studies, gender groups 5 Geography 5 Higher & further education, tertiary education 5 Research and information: general 5 Sustainability 5 consensus 5 linguistics 5 Communication studies 4 Conservation of wildlife & habitats 4 Cultural studies 4 Ecological science, the Biosphere 4 Educational strategies & policy 4 Humanities 4 Humans 4