Sam Sturgis

Twitter/@rousseau_ist

Photos From #FloodWallStreet

NYC climate-change protests continue today, with activists now occupying Wall Street to draw attention to its role in the crisis.

AP Photo/Michael Duff

Africa's Population Will Quadruple by 2100. What Does That Mean for its Cities?

New population figures paint a difficult picture for African cities. But there's more to the story than sheer numbers.

Flickr/Timothy Vollmer

Overall, America's Urban Parks Get High Marks

But there remains a divide in perceptions of access among less-educated, lower-income residents.

AP Photo/Scott Heppell

The Scottish Independence Movement's Final Push Includes a Whole Lot of Chalk Art

The streets of Edinburgh were covered in "Yes" messages on Wednesday.

Shutterstock/Denys Prykhodov

Want to Be Happier? Try Walking Even Part of the Way to Work

New research concludes that an active commute may be as important to well-being as marriage or a pay raise.

Flickr/Halsenberg Media

With Vastly Lower Costs, Mid-Size Cities Give the Hard Sell to Start-Ups

Affordability and public support is helping a handful of Southern U.S. cities seem more attractive to entrepreneurs. But can it last?

Flickr/David Salafla

Yet Another Reason to Like Green Neighborhoods: They're Associated With Healthier Births

Over the course of 3 years, pregnant women living in Vancouver’s greenest neighborhoods delivered healthier babies than those in less tree-lined communities.

Msingi Sasis

Exploring Nocturnal Nairobi

A photographer finds beauty in a city's declining commercial center. 

American Institute of Physics

Mapping the World's Migrating Ocean Pollution

How does Australia's sea trash make it to South America?

Historyshots.com

Every City That Ever Played Host To an NFL Team, on One Poster

A genealogy of American football. 

Shutterstock/Jorge Casais

Cape Town's Universal Wi-Fi Program Isn't Ambitious Enough

It offers too little data—and, with a completion date of 2030, too late.

Twitter

Warning: Don't Urinate Near This Czech Hotel

Whiz on this hotelier's property and risk being broadcast on YouTube.

Bloom Theory

Add Style to Your Camera Strap

It's time to give the modest camera strap some love. 

Shutterstock/Dmitry Syshchikov

Remote-Controlled Moths Are Coming ... to the Rescue?

Scientists can now control the movement of "biobot" moths—and the applications could go far beyond saving your sweaters.  

Mark Byrnes/City Lab

Mapping Uber's Far-Flung Job Board

Dust off your resume. From L.A. to Sri Lanka, Uber needs help. 

Liberty Bottleworks

Defend Your Transit System With City-Specific Water Bottles

A source of urban pride you can carry around.

Flickr/Abir Anwar

Even for the Pros, Fake ID Photos Are Tough to Catch

A new study shows that passport officials are pretty bad at catching fraudulent photo users.

Reuters/Afolandi Sotunde

Lessons From NYC's TB Outbreak Could Help Manage Ebola

30 years ago, tuberculosis ripped through New York City's low-income neighborhoods. The experience could translate to Lagos, Nigeria, as it struggles to battle Ebola.

Flickr/National Park Service

Penned in by Freeways, L.A. Mountain Lions Are Becoming Isolated—and Aggressive

Mountain lions in the Santa Monica Mountains are killing each other and inbreeding at alarming rates.