- Environment Studies 6
- Environmental Politics 6
- Natural Resources 6
- Renewable and Green Energy 6
- Water Policy/Water Governance/Water Management 6
- Earth System Sciences 5
- Human Geography 5
- Development Economics 4
- Ecology 4
- Environmental Policy 4
- Environmental Sociology 4
- Hydrogeology 4
- International Environmental Law 4
- International Relations 4
- Landscape/Regional and Urban Planning 4
- Marine & Freshwater Sciences 4
- Meteorology 4
- Urban Geography / Urbanism (inc. megacities, cities, towns) 4
- Biodiversity 3
- Development and Sustainability 3