In 2008, the global urban population exceeded the nonrural population for the first time in history, and it is estimated that by 2050, 70% of the world population will live in urban areas, with more than half of them concentrated in Asia.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/global-urban-land-use-trends-and-climate-impacts
[2] http://admin.indiaenvironmentportal.org.in/category/author/karen-c-seto
[3] http://admin.indiaenvironmentportal.org.in/category/author/j-marshall-shepherd
[4] http://admin.indiaenvironmentportal.org.in/category/journal/current-opinion-environmental-sustainability
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/land-use
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/climate-change
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/aerosols
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/habitat-and-urbanisation
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/urban-land-use