Urbanization is one of the dominant demographic trends of our time. In 1900, 150 million people lived in cities. By 2000, it was 2.9 billion people, a 19-fold increase. By 2007 more than half of us will live in cities-making us, for the first time, an urban species. From
The Ecology of CitiesI think that this article is a little off base in the way
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