Cobb, John B., Jr. "Towards Sustainable Development in Urbanization." Academic Journal of Suzhou University. 138 (2006): 4-7.

Abstract

         In today's world, the forest is constantly disappearing; agricultural land is being eroded, aquifers are being polluted, fish resources is being continuously reduced; earth, water and air polluted; many biological species are disappearing; the entire planet is warming.  Natural resources and global conditions are worsening. Research scholars repeatedly warn mankind of the coming of disaster, believing that mankind has already fallen into an unsustainable living condition.