Climate action is produced by Sustainable Development International in partnership with the UNEP to encourage and assist governments and business to lower greenhouse gas emissions.

There is now clear scientific evidence that emissions from economic activity, particularly the burning of fossil fuels for energy, are causing changes to the Earth's climate. A sound understanding of the economics of climate change is needed in order to underpin an effective global response to this challenge. The Stern Review is an independent, rigorous and comprehensive analysis of the economic aspects of this crucial issue.

The global debate over who should take action to address climate change is extremely precarious, as diametrically opposed perceptions of climate justice threaten the prospects for any long-term agreement. Poor nations fear limits on their efforts to grow economically and meet the needs of their own people, while powerful industrial nations, including the United States, refuse to curtail their own excesses unless developing countries make similar sacrifices.