He is working on a study on upward mobility in global cities for the London-based Legatum Institute.
Global slums are the other side of many global cities, especially in the global South.
The visual orders of global cities make the articulations between different sectors of a city invisible.
Hong Kong didn't even rank in the top 10 in Knight Frank's first global cities survey, released in 2009.
At the same time, hot-money flows into emerging markets have inflated real estate bubbles across many major global cities.
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The findings come from Swiss bank UBS' "Price and Earnings" survey that looks at purchasing power in 73 global cities.
Rio de Janeiro and Sao Paolo ranked second and third, respectively, among 66 large global cities in staying the closest to that comfort range.
Expat living, on the whole, seems to be on the rise, with global rents jumping 5.1% over the past year in 11 global cities surveyed.
The increasingly homogenized landscapes and built environments of the glamour zone in global cities tend to obscure the fact of multiple articulations with their global slums.
As Keith Skeoch of Standard Life Investments told me, the quality of life outside London helps him recruit, not only from London, but other global cities.
One key reason for this is that the advanced economies and large cultural sectors of global cities have developed a range of working connections with slum dwellers.
The Knight Frank survey, scheduled for release Wednesday, ranks global cities based on a number of variables: economic activity, political power, quality of life, education and influence.
This is partly a result of hyper-growth of demand for space in these global cities by high bidders: corporate firms, luxury hotels, restaurants and shops, luxury residences, and high-end cultural sectors.
One especially enterprising worker, amazed at the high rents in these global cities compared with his village on Sumatra, started to rent apartments to sublet as rooming houses for his friends.
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This massive collective project of small and informal workers, entrepreneurs and distributors, developed alongside the formal economy of the new advanced capitalism that was thriving in global cities around the world, from Buenos Aires to Dublin to Manila and on.
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The New Cities Foundation, a non-profit organization that wants to create more sustainable, dynamic, creative and global cities teamed with Ericsson created a special task force, the Connected Commuting Task Force, to see if there was a positive correlation between the use of smartphone trip planning applications and improving the commuting experience.
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Most slums are not global, just like most cities are not global.
Over half of the global population lives in cities and many are crowded, dirty and short on parking.
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Mr. Yassky led a fight in December to allow e-hailing apps, which are increasingly cropping up in global capitals and smaller cities.
New York and London have taken their places on the global stage as the cities most friendly to new talent, and there are plenty of fresh faces fighting for the spotlight.
Congested roads, smog and fears about global warming have led many cities to try to change the way people move around.
And, Qatar-based businessman Hesham Ismail AbdulRahman Al Emadi is leading an ambitious project to create a global network of " Energy Cities" to house the oil and gas industry.
Happily, because America still has states that are ready to turn a blind eye towards Washington there is hope that some American cities will be global players in the future.
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Two weeks ago, real estate consulting firm Knight Frank said that China housing prices rose 9.3% in 2012, while Hong Kong housing prices rose the most out of all the 55 countries and cities in their Global House Price Index, up 23.6%.
Social Media Week is a global event, occurring in 24 cities, with the purpose to examine the cultural and economic impact of social media around the world.
"Hong Kong is the most expensive of our cities in which to purchase property, " wrote Savills, a global real estate services provider, in its Spring 2012 World Cities Review.
Cities are not the hubs in global business they once were (see page 76), but our editorial home, New York City, remains a commercial crossroads.
We do know for a fact that factors as diverse as climate change and aging populations mean that even as the global urban population continues to grow, some cities are shrinking.
Small increases in global temperatures due to growing amounts of "greenhouse gases" are amplified in big cities, he told a news briefing on the sidelines of U.N. negotiations to reach a global strategy against climate change.
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