Some people believe that economic development should never be at the cost of the environment. They think the present serious environmental problems are largely caused by rapid
economic development. For example, land resources are shrinking because of the industrial development and the expansion of cities. Deserts are spreading because of over grazing, poor fanning, tree cutting, and strip mining. Our air and water supplies are being polluted by poisonous gassesand waste products. It is important, therefore, that we should take another look at the way in which our industries and cities are developing.