New York

Ashley Wells

These Nifty Solar Panels Can Transmit Sunlight Underground to the Lowline

A team shows off its invention, which would make underground parks possible.

Shutterstock

The Internet Is the New Town Hall and Soon Cities Will Be Listening

"Sentiment analysis" of social media could change the way you report potholes forever.

Courtesy of Lit Motors

The Future of Cities According to TechCrunch Disrupt

Three of the finalists in this week's startup contest offer city-themed innovations.

Ideas for Cramming 1 Million More People Into New York City

The city's population is expected to mushroom to 9.1 million by 2030. Here's a novel way to accommodate that growth.

Reuters

The World Trade Center's Rocky Real Estate History

The original Twin Towers had trouble finding tenants, but the new buildings are off to a promising start.

Library of Congress

New York State's Curious, Century-Old Law Requiring Every City and Town to Have a Historian

Is this still a good idea?

Shutterstock

Reviving New York Harbor With Oysters: Why Hasn't This Happened Yet?

It's been more than two years since Columbia University professor Kate Orff made waves with her "Oyster-tecture" proposal. She's still pushing.

Reuters

We Remember: September 11, Eleven Years Later

Private moments at public gatherings in New York and Washington.

Steven Siegel

Mementos of NYC's 'Missing Limb'

Long-time city photographer Steven Siegel recalls one of his favorite subjects, the World Trade Center.

Flickr/TheMuuj

Packing Up: Where People Are Moving In and Out

Large, expensive U.S. metros were more likely to lose residents this summer.

A Diary of Camping in New York City

One couple's quest to find serenity in "the wilderness" of Staten Island.

Reuters

The Geography of Business Density

The most and least dense U.S. metros for business enterprise.

Nina Boesch

Recycling Project of the Day: MetroCard Collages

A different kind of subway art.

Flickr/Louis Clotman

How Amtrak Might Redefine Downtown Philadelphia

A proposal to make Market East Station the city's new Northeast Corridor rail hub could change everything for that district.

A Map of New York City's Moods

The Financial District is one of the angriest places in Manhattan, according to software that measures emotion.

Andrew Burton / Reuters

The World's Leading Cities for Fashion

The places with a disproportionate impact on what gets made, admired, and sold.

Flickr/alex_ford

Teenage Mutant Ninja Ants

Are cities creating new species of animals?

Courtesy VIctor Dover

Defining a Great Street

What makes some spaces better than others?

Roz Allen/Flickr

A Handy App to Record Your Painful Bike Accident

The Bike Crash Kit for the iPhone contains all the things you need after getting run over by a car.