- Alternative Energy sources
- Renewable energy
- Nuclear Power
- Reduce the carbon intensity of fossil fuels
- Energy efficiency and conservation
- Transport and urban planning
- Building design
- Reforestation and avoid deforestation
- Eliminating waste methane
- Geoengineering
- Greenhouse gas remediation
- Biomass
- Carbon air capture
- Carbon capture and storage
- Societal control
- Population
- Sustainable life-style
- Greenhouse gas remediation