Sustainability is based on a simple and long-recognized factual premise: Everything that humans require for their survival and well-being depends, directly or i

A "sustainable society," according to one definition, "is one that can persist over generations; one that is far-seeing enough, flexible enough, and wise enough

World human population is expected to reach upwards of 9 billion by 2050 and then level off over the next half-century. How can the transition to a stabilizing

In 1992 world leaders met at the Earth Summit in Rio de Janeiro to reaffirm the Declaration of the United Nations Conference on the Human Environment that was e

Cities have experienced an unprecedented rate of growth in the last decade. More than half the world's population lives in urban areas, with the U.S. percentage