Science: general issues 1,102 Neurosciences 182 Psychology 140 Botany & plant sciences 96 Microbiology (non-medical) 95 Medical microbiology & virology 92 Physiology 89 Pharmacology 63 Medical genetics 56 Oceanography (seas) 44 Ecological science, the Biosphere 34 Biology, life sciences 30 Infectious & contagious diseases 29 Physical geography & topography 27 Physics 19 Life sciences: general issues 18 History of science 17 Environmental science, engineering & technology 14 History 11 Education 9 Teaching of a specific subject 9 Astronomy, space & time 8 Literary studies: general 5 Computer science 4 History of mathematics 4 Mathematics 4 Politics & government 4 Universities 4 Environmental economics 3 Migration, immigration & emigration 3