Rome

John Peter Oleson

Could a 2,000-Year-Old Recipe for Cement Be Superior to Our Own?

In search of the secret to Ancient Roman construction.

Olympic City

After the Olympics, Documenting What's Left

Gary Hustwit and Jon Pack have been photographing former Olympic sites around the world.

ETA/Yannick Read

A 'Pedal-Powered Popemobile' for Pope Francis

There's "no excuse for the big man to always roll in an SUV," says the inventor of this eco-friendly holy tricycle.

Leonid Tsvetkov

Can You Spot the Trash Hidden Among These Roman Ruins?

Leonid Tsvetkov's strange, fascinating art project.

Shutterstock

A Brief History of Suburbia's Rise and Fall

A new paper tracks suburbia from its ideological roots in the Victorian era to its harsh detractors in the modern age.

Reuters

A City in Waiting: Outside St. Peter's Basilica

Crowds descend to await the announcement of a new Pope.

Max Rossi/Reuters

A Pope Says Goodbye

The 85-year-old leader of the Roman Catholic world gives his last general address.

Shutterstock

St. Petersburg Moves To Outlaw Noisy Sex: This Week in Bans

Also, New York City cancels the livestream of a rebellious Rubber Room teacher, and Rhode Island pours grass killer on America's Lawn of Freedom.

Flickr/TyB

Can Inactive Landfills Become Assets?

An ancient Roman landfill offers ideas about how our old dumps could be more useful than we realize.

Shutterstock

Why People in Cities Walk Fast

Researchers have proposed a number of theories over the years — from sensory overload to the economic value of time.

Wikimedia

Los Angeles Is the Smelliest City in America, Says GQ

The best smelling, that is. See where your city ranks on this highly unscientific listing of odorous burgs.

Reuters

Olympic (City) Hopefuls

Bidding for the 2020 games is heating up. Local support bolsters unlikely Baku

The City as Urban Whirlpool

A new Google map hack lets you create wild, trippy images of your favorite city streets