We could see seven times as many Katrinas every year.
This latest evolutionary trick by cliff swallows is particularly impressive.
The mayor is pushing a new city law that would force retailers to keep all their cigarettes stocked out of public view
Google Street View goes to its most extreme destinations yet: 4 of the planet's highest mountains.
Babak Golkar makes architectural designs out of carpet patterns.
The city is bustling, with parks and nightclubs, but deep scars remain.
An American Indian woman living in Cairo wants to take what she's learned and bring it back to North American reservations.
Children from poor families and special needs kids are disproportionately impacted by the cuts.
Extreme-sports enthusiasts Jokke Sommer and Ludovic Woerth take a hair-raising ride through Brazil's urban jungle.
Vancouver-based architect Michael Green is trying to convince the world to construct tall wood buildings.
Researchers say lethal strains of influenza are most likely to arise next in coastal China, the Nile Delta and elsewhere.
Service increases may pay for themselves through emissions reductions and safety improvements, even before factoring in congestion.
And you probably can't even smell it.
Our weekly roundup of the most intriguing articles about cities and urbanism we've come across in the past seven days.
The Northeast Corridor is, unsurprisingly, the promised land of Irish bars and restaurants.
A city is only as good as its signs.
"If ya don't see it, we don't have it."
The NYPD's aggressive policy has come under increased scrutiny in recent months.
You don't need satellite imagery to see how much the city has changed.