What is the nature of biodiversity as an economic commodity and why does it matter? How would its conservation contribute economically to our well being? I consider three issues: - Why is biodiversity important from an economic perspective? - hat kind of commodity is it? - oes our usual economic...

The value of the services provided top human societies by natural ecosystems and biogeochemical cycles has recently been the topic of discussion and research. Here I review some of the basic economic principles necessary for understanding some of the questions that arise in this area. I argue...

The world of public goods has changed in the last quarter century. Many of the changes have their origins in massively increased human impacts on the biosphere, and in particular on important life support systems such as the carbon cycle, and on resources such as biodiversity, which operate as...