Urban Land Set to Triple By 2030, Study Suggests

LiveScience.com
Urban Land Set to Triple By 2030, Study Suggests
Urban lands will triple in area in the first three decades of the 21st century, suggests research published Sept. 17, 2012, in the journal PNAS. Shown here, an astronaut image, taken Aug. 10, 2011, of the lit-up cities across northwestern Europ
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