For the past 150 years, economics has been treated as a social science in which economies are modeled as a circular flow of income between producers and consumers. In this “perpetual motion” of interactions between firms that produce and households that consume, little or no accounting is given of the flow of energy and materials from the environment and back again. In the standard economic model, energy and matter are completely recycled in these transactions, and economic activity is see...

In this updated edition of a groundbreaking text, concepts such as energy return on investment (EROI) provide powerful insights into the real balance sheets that drive our “petroleum economy.” Hall and Klitgaard explore the relation between energy and the wealth explosion of the 20th century, and the interaction of internal limits to growth found in the investment process and rising inequality with the biophysical limits posed by finite energy resources. The authors focus attention on the ...

In 1865, economist William Stanley Jevons published The Coal Question, describing the crucial role that coal played in British economic development. Here, he enunciated what has come to be known as the Jevons paradox, which stated that improvements in resource efficiency leads to greater resource use as the expansion of scale occasioned by lower operating costs overwhelms the savings due to greater efficiency. The implications for any sustainability scenario are enormous and a maj...