Evolutionary biology is above all concerned with the way life on earth and its setting change over time. The problem posed by Daily and Ehrlich, of how humans, the myriads of organisms that humans carry around in their bodies and the stage on which they interact have been changing over time, may...

Although improvements in human health represent a crucial aspect of development worldwide, many trends associated with development and global change appear to be reducing health security. In this article, we define the human epidemiological environment and describe key biophysical, economic,...

Economic models for assessing costs of greenhouse gas abatement can be classified as macroeconomic (top-down) models or micro (bottom-up) models. As yet little attention has been focused on the modelling of developing countries. This paper proposes a methodology for integrating the two...

The sustainability of natural resource use is influenced by population pressure, but this exercises a much less critical impact than the overall policy framework. In Colombia, various agricultural and other policies whose effect is to constrain the poor's access to land encourage environmental...

This article offers an account of the economics of the environment. I sketch the subject's motivation and scope, and try to identify what we know and what we don't as yet know about matters of concern. This demands brazen selection, and I haven't avoided it: for the most part, the article...