Information has some unique characteristics. Unlike most other goods and services, it is neither rival (use by one prevents use by others) nor non-rival (use by one does not affect use by others), but is enhanced with increased use, or 'additive'. Therefore a unique allocation system for both...

While global Gross Domestic Product (GDP) has increased more than three-fold since 1950, economic welfare, as estimated by the Genuine Progress Indicator (GPI), has actually decreased since 1978. We synthesized estimates of GPI over the 1950–2003 time period for 17 countries for which GPI has...

The most critical task facing humanity today is the creation of a shared vision of a sustainable and desirable society, one that can provide permanent prosperity within the biophysical constraints of the real world in a way that is fair and equitable to all of humanity, to other species, and to...

This analysis reviews and synthesizes the literature on the net energy return for electric power generation by wind turbines. Energy return on investment (EROI) is the ratio of energy delivered to energy costs. We examine 119 wind turbines from 50 different analyses, ranging in publication date...

"The most critical task facing humanity today is the creation of a shared vision of a sustainable and desirable society, one that can provide permanent prosperity within the biophysical constraints of the real world in a way that is fair and equitable to all of humanity, to other species, and to...

The concept of ecosystem services (the benefits people derive from functioning ecosystems) is beginning to change the way we view the relationship between humans and the rest of nature. To the extent that we view humanity as embedded in and interdependent with the rest of nature, rather than...

The concept of ecosystem services (the benefits people derive from functioning ecosystems) is beginning to change the way we view the relationship between humans and the rest of nature. To the extent that we view humanity as embedded in and interdependent with the rest of nature, rather than...