Impact of Human Overpopulation on Social Systems and the Environment

In less than 4 years Tokyo, the world's largest city, will reach a staggering 27 million people. San Paolo, Brazil will reach almost 20 million, and Mexico City will reach 19 million. Sixteen other cities world wide are expected to exceed 10 million inhabitants. The planet is undergoing rapid urbanization, more then half the world's population will reside in heavily urbanized cities by 2007. Massive industrialized cities are not the only major human impact on our planet. The World Book Atlas also estimates that 90,000 square kilometers of forest, an area the size of the British Isles, is being lost each year. Tragically, the greatest impact to the world has come through global warming as a direct result of growing population masses. …