1. UNFCC.Kyoto Protocol; United Nations Framework Convention on Climate Change, 2006; available online: http://unfccc.int/kyoto_protocol/items/2830.php (accessed September 9, 2007).
2. U.S. Mayors Climate Protection Agreement; 2005; available online: http://www.usmayors.org/climateprotection/ (accessed September 17, 2007).
3. UN.World Urbanization Prospects: The 2003 Revision; United Nations: New York, NY, 2003.
4. Bailey, J.Lessons from the Pioneers: Tackling Global Warming at the Local Level; Institute for Local Self Reliance: Minneapolis, MN, 2007.
5. Seattle.2005 Inventory of Seattle Greenhouse Gas Emissions: Community and Corporate; City of Seattle, Washington Office of Sustainability and Environment, 2007; http://www.seattle.gov/climate/ (accessed September 4, 2007).