Cobb, John B., Jr. "Sustainable Urbanization." International Conference on Toward a Sustainble Urbanization. Soochow, China, October 2007: 27-35.

Abstract

(Excerpt) All over the world, forests are disappearing and agricultural lands are eroding. Aquifers are being exhausted. Fish stocks are diminishing. Land, water, and air are being poisoned. Many species of living things are disappearing. The planet is getting warmer, resulting in increasing storms and changes in rainfall. Those who study natural resources and the condition of the earth issue warning after warning. They tell us that long ago humanity crosses the line into unsustainable living. Catastrophes loom ahead and sometimes break into our own time.