These charts--made with information from weather satellites scanning the ground--show how wide and how tall cities around the world have grown. What’s happening to the size of cities in Asia will blow your mind.
Faced with the incomprehensible scale of worldwide mega-urbanization, observers have alternately fallen back on sheer numbers or city comparisons to drive home the speed at which cities in the developing world are growing. For example, New York University’s Shlomo “Solly” Angel projects the world’s urban population will double in 40 years, while urban land cover--including everything from skyscrapers to slums--will triple in size during that span. Grasping to put such numbers into context, the McKinsey Global Institute estimates China will build the equivalent of New York every other year for 20 years, while India needs to add the equivalent of a Chicago to its building stock annually.
The mind reels, but such comparisons tell us little about the truth on the ground--is the urban future of India more likely to look like Chicago or Dharavi (Mumbai’s famous slum) or something else completely? A satellite designed to measure ocean winds offers us a clue.
Delhi world's second most populous mega-city Times of India MUMBAI: The urban agglomerations of Mumbai and Delhi, which barely matched up to global cities in size in 1950, are now counted among the seven most populous mega-cities in the world,...
Peter Steffan's insight:
TAlks of Mega Cities as over 10 milion rather than 8 and refers to move of mega cities into developing world as distinct from developed world.
Sixty-two years ago New York and Tokyo were the world's only megacities – 'urban agglomerations' with over 10 million residents. Now in 2012, there are 23, and by 2025 the UN predicts nine new megacities in Asia will bring the total to 37. All but eight will be in the developing world – and the quality of life for millions will be determined by the quality of their cities. This interactive map shows the 100 most populous cities as of 2012 according to the UN.
Rapid urbanization will take a heavy toll on public health if city planning and development do not incorporate measures to tackle air pollution, warns a report launched in Beijing last month.
The report1, compiled by the World Meteorological Organization (WMO) in Geneva, Switzerland, and the International Global Atmospheric Chemistry (IGAC) project in Boulder, Colorado, was launched as part of the IGAC Open Science Conference on Atmospheric Chemistry in the Anthropocene. A striking point in the report, says Liisa Jalkanen, head of the WMO’s Atmospheric Environment Research Division, is how quickly megacities — metropolitan areas with populations of more than 10 million — are rising in developing countries.
There are now 23 megacities in the world, compared with just two 60 years ago. Just over half of the population currently dwells in cities, and with the urban population expected to nearly double by 2050, that proportion is projected to approach 70%. “Almost all this growth will take place in the developing world,” says Jalkanen.
China's Megacities Must Break the Second-Class Citizen Trap Economic Observer Summary：Beijing has used the hukou system to make living in the city harder so that it can control its rapidly rising population.
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