The city's population is expected to mushroom to 9.1 million by 2030. Here's a novel way to accommodate that growth.
Leagues are taking an impressive range of innovative and cost-effective steps toward sustainability.
Is this still a good idea?
This swanky avian domicile can fit up to 78 finch families – and one human voyeur.
It's been more than two years since Columbia University professor Kate Orff made waves with her "Oyster-tecture" proposal. She's still pushing.
Long-time city photographer Steven Siegel recalls one of his favorite subjects, the World Trade Center.
The visionary architect imagines metropolises built like vast orchards.
One couple's quest to find serenity in "the wilderness" of Staten Island.
Great public art, or the setup for a hilarious jet-ski accident? You be the judge.
A new book aims to repair the reputation of the much-maligned composite.
Jack Boucher spent his life preserving historic buildings with his camera.
A different kind of subway art.
In Video Painting Europe, Sweatshoppe uses ingenious infrared tracking to smear digital video over concrete surfaces with paint rollers.
In Tokyo, an artist creates sculpture with old toys, plastic and wire.
Beijing's $700 million Gate of the East has been attracting attention for its resemblance to a certain sartorial item.
This concept building is being billed as a vertical farm. We'll be the judge of that.
Are cities creating new species of animals?
The city is indeed mulling an elaborate plan to hitch bike lanes along elevated rail tracks.
Striking images of Auroras.