All cities have gone through the ebb and flow of social distancing and lockdowns, with regulations repealed as cases decline and hurriedly re-imposed when cases return. But few urban residents likely ...

It’s easy in America to think of trains with lots of nostalgia and little else. We are so firmly grounded in the culture of cars that when we envision our future of transportation, we can’t see the ...

Trees in urban areas can lower residents' blood pressure, reduce stress and contribute to an overall sense of well-being. But did you know they can also save cities money? In the world's megacities, ...

While only about 3% of the world’s land area is covered by urban areas, cities account for around 70% of worldwide CO2 emissions, about two-thirds of global energy demand, and about 80% of global GDP.

The world’s population is rapidly moving into city centers; by 2050, seven out of every 10 people on Earth will live in a city. But not every city will be a megacity–defined as an urban area with over ...

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Today, megacities have become synonymous with economic growth. In both developing and developed countries, cities with populations of 10 million or more account for one-third to one-half of their ...

HONOLULU, Hawaii -- In one city block, future Soldiers could find themselves in an intense gunfight with enemy militants. In another, Soldiers might crawl through debris to rescue trapped residents or ...

Reducing emissions in a few of the world’s most populous cities could have an outsized impact on climate change. In 2050, 2.5 billion more people will live in cities than do today. As the world grows ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...