| Full Form | Intergovernmental Panel on Climate Change | International Union for Conservation of Nature |
| Year of Formation | 1988 | 1948 |
| Created By | UNEP + WMO | Governments & NGOs |
| Nature | Intergovernmental scientific body | Global conservation network |
| Main Focus | Climate change science | Biodiversity conservation |
| Key Function | Scientific assessment | Conservation action + policy |
| Research | Does not conduct original research | Field & applied research |
| Flagship Output | Assessment & Special Reports | IUCN Red List |
| Policy Role | Policy-relevant, not prescriptive | Policy advice + implementation |
| Membership | 195 countries | 1,400+ organizations |
| Headquarters | Geneva, Switzerland | Gland, Switzerland |
| Institution Head | Chair – Sir Jim Skea (2023– ) | President – Razan Khalifa Al Mubarak (2021– ) |
| Secretariat Head | — | Director General – Dr. Grethel Aguilar |