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December 10, 2013
UNITED NATIONS — The number of city dwellers is at an all-time high of about 3.5 billion and will nearly double in the next 30 to 40 years, with almost all the growth in developing countries, the head of the U.N. agency focusing on cities said Monday.
Joan Clos said even though the rate of population growth is decreasing, the U.N. projects that in the next 30 years the global population will increase from 7 billion to 9 billion — and the urban population will grow between 2.5 billion and 3 billion people.
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