1. Friedman, T. L. Hot, Flat, and Crowded: Why We Need a Green Revolution — and How it Can Renew America (Farrar, Straus and Giroux, 2008)
2. Gore, A. The Climate for Change New York Times (9 November 2009).
3. Shell Energy Scenarios to 2050 (Shell International, 2008); available at
http://www.shell.com/scenarios
4. Energy Technology Perspectives 2008, Chapter 6 (International Energy Agency, 2008).
5. Jacobson, M. Z. & Delucchi, M. A. Sci. Am. 301, 58–65 (November, 2009).