As this book makes clear, civilization cannot long continue to ride on an oil slick. Worldwide, many people have come to see dependence on coal, and especially on oil, not only as unsustainable, but as profoundly destabilizing, both environmentally and politically. While ever-increasing demands continue to be placed on "mainstream" energy sources, recurring attempts have been made to generate power in "alternative" ways. After retracing some of these efforts, this succinct and historically informed volume explores the ongoing debate over alternative energy that gathered strength in the 20th century, showing how that debate mirrors larger attitudes toward energy and consumption.