City Solutions

Urban Solutions

View photos showing how cities can serve as engines of growth and innovation. View Photos »

See our compilation of the acclaimed, yearlong editorial series on global population.

They'd be carbon free, relatively cheap, supposedly safe, and could power a village.

More About Cities

City Solutions Blog

Welcome to the City Solutions blog, presented by the C40 Cities Climate Leadership Group (C40), a network of the world’s megacities that are a leading force for global action on climate change.
Urban Sprawl

As new home seekers look for breathing room in the burbs and beyond, the dream of space is being displaced by a reality of traffic jams, high taxes, and pollution: the irony of urban sprawl.
Urban Threats

Big cities can easily develop big problems, such as poor water quality and waste disposal. But strong urban planning can help manage these and other difficulties.
Moving to the City

Nearly 85 percent of Brazil's 191 million people now live in urban areas, where smaller families are an economic advantage.
Urban Escapes

Most people, even dedicated urbanites, need a break now and then from concrete jungle, round-the-clock noise, and exhaust fumes. Some American cities are lucky enough to have units of the National Park System right on their doorsteps, offering recreation and natural beauty within easy reach of millions.
Cities Are the Key

Urban theorist Richard Florida talks about the rise of mega-regions.

Explorer Moment: Ray of Hope

Biologist Andrea Marshall leads her team in discovering new and conserving known manta ray species.
Sylvia Earle on Women in Science

Sylvia Earle reflects on her scientific career and on gender obstacles she faced along the way.

Go Inside the God Particle

See how physicists will use a giant atom smasher in hopes of finding the so-called God particle.
Virtual Monkey

A study has monkeys directing a "virtual hand" through electrical brain impulses.
Match Game

Test your memory with our My Shot match game.

Solar Storms Pictures

The space-weather forecast for the next few years: solar storms, with a chance of catastrophic blackouts on Earth. Are we prepared?
Terra-Cotta Army Pictures

Archaeologists and artists, armed with the latest tools and techniques, are bringing the life-size army of painted clay soldiers back to life.
Visions Pictures

Each month, National Geographic magazine features breathtaking photographs in Visions of Earth. Browse through visions of the world as seen through a photographer's eye.