How Green Is My City

Retrofitting is the best way to clean up urban living

All Climate Is Local: How Mayors Fight Global Warming

Mayors are often better equipped than presidents to cut greenhouse gases

Street Talk: What Innovations Would Make Cities More Livable?

What innovation—technological or otherwise—would make any city a substantially more livable place? We put this question to urban leaders and our own readers. Here's what they said...

The Efficient City

Municipalities worldwide are exploiting a host of creative solutions to reduce energy consumption, water use, waste and emissions, while also making it easier for people to get around

Harnessing Residents' Electronic Devices Will Yield Truly Smart Cities

The best way to harness a city's potential for creativity and innovation is to jack people into the network and get out of the way

Street Markets and Shantytowns Forge the World's Urban Future

Shantytowns, favelas and jhopadpattis turn out to be places of surprising innovation

Brains over Buildings

To rejuvenate urban centers, look to teachers and entrepreneurs

Life in the Meta City

We walk a line between the anarchy of choice and Disney-fication, says the author of Neuromancer

Cities: Engines of Innovation

Most of humanity now lives in a metropolis. That simple fact helps to fuel our continued success as a species

Street-Savvy

Meeting the biggest challenges starts with the city

Bigger Cities Do More with Less

New science reveals why cities become more productive and efficient as they grow

Better Health for the Uncounted Urban Masses

Castles in the Air

The attacks of 9/11 supposedly ended the age of the skyscraper. A decade on we're building more than ever