| Read also the new edition 2022 IPCC Assessment Report on Climate Change |

| Document | Description |
|---|---|
| An attractive PDF version of the Level 1 summary (6 pages, 0.7 MB) | |
| A short summary by GreenFacts of the below source document (16 pages, 0.6 MB) | |
| A detailed summary by GreenFacts of the below source document (40 pages, 1.1 MB) | |
| Level 3 - The source document produced in 2007 by the Intergovernmental Panel on Climate Change (IPCC) : Fourth Assessment Report (AR4) | |

This summary is free and ad-free, as is all of our content. You can help us remain free and independant as well as to develop new ways to communicate science by becoming a Patron!