Mega City

When the Kumbh Mela, a 48-day Hindu festival held every four years, starts this week in northern India it will be the largest gathering in history. Researchers are using the opportunity to study the formation and inner-workings of a pop-up mega city.
Jan 15, 2013   The Atlantic Cities
China plans to create the world's largest mega-city, which will be geographically 26 times larger than Greater London and double that of Wales.
Jan 27, 2011   The Telegraph