Graphic information: The global impact of rapid urbanization and population growth


Europe at night in 2001



Global warming - cloud cover in May 2010
http://earthobservatory.nasa.gov/IOTD/view.php?id=44250

Circa 2 billion hectares of soil, equivalent to 15 per cent of the Earth's land area (an area larger than the United States and Mexico combined), have been degraded through human activities.


















Slums India



Slum Nairobi


Slum Lagos, Nigeria


Venezuela, slum uprising