CW1-3291

From Environmental Technology

.:Ecological Footprint:.

http://www.sustaindane.org/main/EF1.htm

This site contains a detailed definition of what an "Ecological Footprint" is.

.:Renewable Resources:.

http://www.rredc.nrel.gov/

RReDC Home Page. This site explains the several types of renewable energy sources in the U.S. in 3 ways, through:

• Publications
• Data
• Maps

.:Environmental Sustainability:.

http://sedac.ciesin.columbia.edu/es/esi/

This site provides access to ESI reports and data for 2005, and also of the three preceding years (2000, 2001 and 2002).