UrbanThe UN predicts that the current world population of seven and a half billion could grow to more than 11 billion by the end of the century and that somewhere between 80 and 90 percent of those people will be living in cities.
Falling under the megacity spell
Hidden cost of migrating to the city
The world's sinking megacities
Urbanisation and megacities
Urban Development: Megacities
The age of megacities interactive
Calculate your global footprint
How many Earths does it take to sustain your lifestyle?