One of the reasons I’m so fascinated by cities is that it’s becoming increasingly more important to get them right. From about 1831 to 1925, London was the largest city in the world. Its population went from somewhere around 1.5 to 2 million people to nearly 7.5 million. London surpassed Beijing as the largest city and was then surpassed by New York.
Today our largest cities are significantly bigger. Tokyo has almost 40 million people and London doesn’t even make the top 10. But there’s also a broader shift taking place. According to a new report by the United Nations, most of the world’s largest cities will be in Africa and Asia by 2030. Here’s a chart from Quartz:
And the reason for this shift is because Asia and Africa are newly urbanizing, whereas the rest of the world has already urbanized. In North America, over 80% of people already live in cities.
But even though Asia and Africa are following a trend that has already taken place in the rest of the world, it doesn’t mean we should assume we know what we’re doing. Having spent time in cities like Dhaka, I can attest to the many challenges that these mega-cities are facing and will continue to face as people flood in from the rural areas looking for economic opportunities.
So while it’s important that we talk about strategies for reviving cities like Detroit – which has a population somewhere around 700,000 - 800,000 people – we should also keep in mind that we have some significant challenges ahead of us in terms of creating a sustainable urban planning agenda for the world.
Last weekend I posted a poll asking readers what they think the “capital of the world” will be in 2050. It was really the 2nd half of a two part poll. The first one asked what people think the capital of the world is today. And the majority of people said New York.
While New York still came out on top in the 2nd poll, the most notable difference is the rise of Chinese cities. Behind New York is Shanghai, Hong Kong and Beijing. And in a way, this order makes sense to me. China would like to see Shanghai on top of Hong Kong, because it’s perceived as being more Chinese (Hong Kong is still too British). But both are still more economically important than Beijing.
Still, my own belief is that China is going to need to go through some structural changes before its cities really have a chance of dethroning New York (or London, depending on your vote in the first poll). And I think it has to do with openness, transparency and freedom. Fred Wilson probably put it best when he said to basically invest in whatever China blocks:
As our [Bitcoin] panel was winding down, Superintendant Lawsky asked what countries were doing it right. I didn’t answer that question but instead decided to talk about one that isn’t doing it right and brought up China and noted that a fantastic investment strategy would be to have invested in every Internet service that China has blocked. My point being that the services China likes to block are the really important ones that have been built on the Internet.
He then goes on to say that he believes there’s a strong correlation between innovation and freedom. And I would agree. So until China stops blocking the innovation that is likely going to drive the world forward, I think it’s going to struggle to assume a true leadership position.
What are your thoughts?
A few days ago I asked a reader of this blog if there was anything, in particular, that she’d like to see more of on here. She responded by saying that she’d love to learn more about how other cities—outside of Toronto—are managing urbanization, as well as how we shape cities and cities shape us.
Would love to read how other cities are managing the growth of urbanization, how we change cites and they change us @donnelly_b
— Nancy Phatsaphaphone (@PhatNancy)
It’s an interesting and important question because, frankly, the challenges are greater outside of Toronto. One of the stats that often gets cited here in the media is how the Greater Toronto Area gets approximately 100,000 new immigrants every year. This doesn’t include domestic migration though, so I would assume that our total number is even greater.
But if we stick with 100,000 for now, it means the GTA receives about 11.4 new immigrants every hour (100,000 people / 8,765 hours in a year). Lagos, Nigeria, on the other hand, receives between 50-60 new people every hour. In fact, it’s predicted to be 7th fastest growing city in the world between now and 2020.
If you take a look at the complete list of the world’s fastest growing cities (all estimates, of course), you’ll likely notice that the vast majority of the cities are in the developing world. And that’s really the challenge. The world is rapidly urbanizing and becoming the most urban it’s ever been, but the changes are the greatest outside of developed nations. This poses entirely unique challenges.
Of the kinds of cities I’m talking about, I’m most familiar with Dhaka, Bangladesh. In my last year at Penn, I was part of a studio led by KieranTimberlake Architects that focused on water and housing issues in that city. It was a partnership with the University of Dhaka. We spent roughly 2 weeks there and it was an eye opening experience.
Here’s a telling slide from our final presentation:
What we were trying to do with this chart was compare population and per person land value for our development site according to various city types. In other words, we were essentially asking: If we were to build out our proposed site in the same way, as say, Dallas, Los Angeles, Hong Kong, or what is typical for Dhaka, how many people could we fit and what would be the resulting per person land value?
I don’t remember where we got the land value figures from, but we were trying to be cognizant of the fact that every city requires a unique solution. Using the same per person land values in Dhaka as in Dallas would be unimaginable because Dhaka has over 40,000 people per square kilometre (top right on the diagonal line above) and Dallas has under 1,400 per square kilometre (bottom left on the diagonal line above).
The challenges of urbanization in the developing world are profound, particularly in places like Dhaka where most of the city is subject to severe annual floods. By some estimates, 18% of the city’s land area gets flooded every year—talk about adding another layer of city building complexity.
We didn’t solve all of the problems in that studio and we’re not going to do it here, but I do think it’s important to fully understand the problem. One of my favorite books on cities is called “The Endless City." It examines New York, Shanghai, London, Mexico City, Johannesburg and Berlin, and has a ton of great data and diagrams.
Here are a two that outline densities and land use patterns for the above 6 cities (same order starting on the top left):
If you’re interested in cities, it’s definitely worth having it on your coffee table. And fitting to @PhatNancy’s tweet, ”The Endless City doesn’t just show how cities are changing but also how they are changing us.”