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How to manage urban expansion in mega-metropolitan areas?

Philip E. Karp's picture
 


As the world becomes increasingly urbanized, the number of megacities is growing rapidly.

Today there are 37 cities worldwide with populations of greater than 10 million, and 84 with populations greater than five million. More than three quarters of these cities are in developing countries. Together with their surrounding metropolitan areas, these cities produce a sizable portion of the world’s wealth and attract a large share of global talent.

These megacities face a series of common challenges associated with managing urban expansion, density, and livability—in a manner that takes advantage of the benefits of productive agglomerations, while mitigating the disadvantages of such high degrees of congestion and urban density.

Moreover, like other metropolitan areas, megacities face challenges of effectively coordinated planning, infrastructure development, and service delivery across multiple jurisdictions. Indeed, the New Urban Agenda issued at the Habitat III conference in 2016 identified metropolitan planning and management as one of the most critical needs to ensure sustainable urbanization.

How countries and communities are taking on gender-based violence

Sweta Shrestha's picture
The stat is appalling: 1 in 3 women worldwide have or will experience intimate partner violence or non-partner sexual violence in their lifetime.

Although it may take the form of domestic violence, gender-based violence is not merely a personal or family matter. Associated with certain societies' social norms and many other risk factors, such violence leads to severe social and economic consequences that can contribute to ongoing poverty in developing and developed countries alike.

Because violence affects everyone, it takes us all—from individuals to communities, and from cities to countries—to tackle the pandemic of violence against our women and girls.

On Day 15 of the global #16Days campaign, let’s take a look at a few examples of how community groups, civil society organizations, and national governments around the world are making informed efforts to prevent and respond to various forms of gender-based violence.

Have Humans Evolved to Manage Megacities?

Chandan Deuskar's picture
Ancient cities, like Mohenjodaro in modern-day Pakistan, emerged relatively recently in human history.
Ancient cities, like Mohenjodaro in modern-day Pakistan, emerged relatively recently in human history (photo courtesy of Saqib Qayyum used through a Creative Commons license.)​


The growth of large metropolitan areas around the world has been very recent and very rapid, particularly when measured against the duration of human beings’ existence as a species. For the first 95% of our time on earth, we built no settlements at all. Cities of a million people arose during only the last 1% of homo sapiens’ time on earth, and there are already 500 such cities in the world today.

If we have spent most of our existence as small wandering bands, does that mean we are ill-equipped to manage urban settlements of this vast size? The key to success in our current urban transformation may in fact be the same as the key to mankind’s earliest origins - our ability to cooperate.