| Term | Report |
|---|---|
| Taiga | GEO-7, GEO-1-6 |
| Tailings | GEO-7 |
| Target-seeking scenarios | GEO-7 |
| Taxonomy | GEO-7, GEO-1-6 |
| Technology | GEO-7, GEO-1-6 |
| Technology transfer | GEO-7, GEO-1-6 |
| Technology-focused transformation pathway | GEO-7 |
| Telecoupling | GEO-7 |
| Tenure security | GEO-7 |
| Thermokarst | GEO-7, GEO-1-6 |
| Threatened species | GEO-7, GEO-1-6 |
| Threshold | GEO-7, GEO-1-6 |
| Tipping point | GEO-7, GEO-1-6 |
| Top-down | GEO-7, GEO-1-6 |
| Topography | GEO-7, GEO-1-6 |
| Topsoil | GEO-7, GEO-1-6 |
| Total cost | GEO-7 |
| Total cost recovery | GEO-7 |
| Traceability | GEO-7 |
| Traditional Knowledge | GEO-7 |
| Transformation | GEO-7, GEO-1-6 |
| Transformation pathways | GEO-7 |
| Transformational change | GEO-7, GEO-1-6 |
| Transformative change | GEO-7 |
| Transition finance | GEO-7 |
| Transitions | GEO-7, GEO-1-6 |
| Trillion | GEO-7, GEO-1-6 |
| Tropospheric ozone | GEO-7, GEO-1-6 |
| Turbidity | GEO-7, GEO-1-6 |