Book excerpt: This summary of the Intergovernmental Panel on Climate Change represents the formally agreed statement concerning climate change mitigation. It focuses on new literature on the scientific, technological, environmental, economic & social aspects of mitigation of climate change, pub. since the 3rd Assessment Report & the Special Reports on CO2 Capture & Storage & on Safeguarding the Ozone Layer & the Global Climate System. Contents: Greenhouse gas emission trends; Mitigation in the short & medium term across different economic sectors (until 2030); Mitigation in the long-term & beyond 2030; Policies, measures & instruments to mitigate climate change; Sustainable develop. & climate change mitigation; & Gaps in knowledge. Illus.