There are eleven or twelve or thirteen cities in China with populations of over 10 million people and most people in the West have never even heard of these cities.
Land degradation, rising sea levels, famine, and conflict will continue to drive people from their homes and towards cities, with megacities like Mexico City and Lagos becoming increasingly common in some of the poorest parts of the world.
Cities are 2% of the earth's crust, but they are 50% of the world's population.
In 2007, the majority of the world’s population – over 3 billion of us – will live in urban areas for the first time in history.
As megacities like Mexico City and Lagos become increasingly common, we could see a rise of the urban epidemic and a new era of infectious disease threatening global health security.
Urbanization is the dominant demographic trend of our time.
There's no unemployment in squatter cities. Everyone works. One-sixth of humanity is there. It's soon going to be more than that.
Cities are the greatest creations of humanity.
India's sprawling subcontinent can never become a plus-size Singapore. But perhaps we can weave together an urban web that is the equivalent of a thousand Singapores.
The 19th century was the century of empires, the 20th was the century of nation states, and the 21st is the century of cities and mayors.
Cities are important because that's where the majority of the world's population lives and an even bigger share of the global economy resides.
The Metropolis should have been aborted long before it became New York, London or Tokyo.
The world's major metropolitan cities are more or less the same.
