Vijay Vaitheeswaran is correspondent for The Economist and coauthor, with Iain Carson, of Zoom: The Global Race to Fuel the Car of the Future (New York: Twelve Books, 2007). He wrote “Think Again: Oil” for the November/December 2007 issue of FP.

Dr. Robert L. Hirsch is a senior energy program advisor at Science Applications International Corp. and the primary author of Peaking of World Oil Production: Impacts, Mitigation, and Risk Management.