This article, which is the second in a two-part series, is about American energy security. Amory and Hunter Lovins respond to the suggestion of relying on oil from the Arctic National Wildlife Refuge with arguments for relying on energy efficiency instead. Many tasks that rely on oil could be substituted by energy efficiency measures and renewable fuels. The authors argue that a balanced, market-driven energy policy can make both abundant—if we gracefully let go of the past, embrace what works, and do what most Americans want. The first article is “Mobilizing Energy Solutions” (RMI ID E02-01).