Gore, Al. An Inconvenient Truth. Emmaus: Rodale, 2006.
Sunset Books. 136 Best Ways to Save on Your Home Energy. Menlo Park: Sunset, 2001.
Most of the photos on this site were found on the Climate Crisis website: http://www.climatecrisis.net/
Photo of earth: Image Science and Analysis Laboratory, NASA-Johnson Space Center. “The Gateway to Astronaut Photography of Earth.” http://eol.jsc.nasa.gov/sseop/EFS/