The Urban Present in 21st century turning from Cities to Megacities



 
Cities are no longer isolated and responding only to local and regional influences. Mega-cities are exploding in size and growth, for the most part in newly developing regions of the globe. The impact of this growth, however, is not isolated. The urban explosion is international in its origins and in its influences, affecting every continent and country, as a result of globalization, multinational political affiliations, telecommunications, transport and commerce



Cities have shaped mankind. They now shape the quality of life for the entire biosphere of earth. But today, city building is subject to the unplanned and often chaotic flow of humankind undergoing unprecedented growth, migration, and an attendant diminution of natural resources, beyond the limits of sustainable life.

From the beginning of history, civilization has been founded around great cities. Ancient Sumerians, Egyptians, Mayans, Chinese and inhabitants of the Indus Valley lived in urban settlements with amenities such as stone and brick construction and urban water and drainage systems.

 
 
In the eighteenth and nineteenth centuries, Europe and North America became increasingly urbanized and city and country more separated into disparate zones, impelled by the Industrial Revolution, London, Paris and New York were historic population magnets with the promises of wealth and a good life.
 
old city of toronto
In 1900, only 160 million people lived in cities. In 2000, half of the population of the world are urban dwellers. In the last hundred years, world population has grown from about 1.6 billion to 6 billion.

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