- Climate Change/Climate Change Impacts 12
- Environment, general 10
- Climate Change 9
- Earth Sciences, general 9
- Environmental Law/Policy/Ecojustice 8
- Earth System Sciences 6
- Geochemistry 6
- Geology 6
- Geophysics/Geodesy 6
- Atmospheric Sciences 5
- Science, Humanities and Social Sciences, multidisciplinary 5
- Science, multidisciplinary 5
- Animal Ecology 3
- Evolutionary Biology 3
- Zoology 3
- Animal Genetics and Genomics 2
- Anthropology 2
- Climatology 2
- Human Genetics 2
- Atmospheric Protection/Air Quality Control/Air Pollution 1