Abstract: Abstract: The Working Group III of the IPCC announced the summary for policy makers and the underlying fourth assessment report Climate Change 2007: Mitigation of Climate Change, on 4 May 2007 in Bangkok. This report provides a comprehensive review and state-of-the-art assessment of the scientific, technical, environmental, economic, and social aspects of the mitigation of climate change by updated developments in the literature during the last five years. In the report, examination is made into the greenhouse gas (GHG) emission scenarios in the short and medium term (till 2030) and in the long term (beyond 2030), mitigation potential, cost ranges, and possible choices for stabilization of GHG concentration in the atmosphere. In general, a conclusion is drawn in the report that future GHG emissions are highly dependent on development pathways. Many currently available technologies and those that would be commercially viable technologies by 2030 can reduce emissions in a cost effective manner. Stabilization of GHG concentrations in the atmosphere after 2030 can be kept at relatively low level with comparatively lost cost with respect to their impact on GDP growth. However, greater cooperative efforts are required for effective emissions reduction. Sustainable development and climate change mitigation can be mutually reinforced and synergies are required.

Key words: mitigation of climate change, IPCC Working Group III, the fourth assessment report, scientific results, updated understanding