A Streetlight Powered by Algae: Is This Actually Possible?

The French biochemist behind this strange green light sees it having a "massive" palliative effect on global warming.


Green Infrastructure Could Save Cities Billions

New estimates find that moving toward sustainability can greatly reduce energy and water treatment costs.

Flickr/John Bracken

Why Is a Patent Troll in Luxembourg Suing U.S. Public Transit Agencies?

ArrivalStar claims it invented live transit alerts. Your apps, taxpayer dollars, and the open data movement are all at stake.


The Fascinating Story of How Those Tropical Insects Made It Into Your Starbucks Coffee

Starbucks has said it's stopping the use of bug-based red dye. Why? Making the stuff looks like so much fun!


Turning Old Beer Bottles Into Garden Mulch

Is there anything high-speed flexible impactors can't flail into gold?

Bicycle Routes Built for a Tiger, Zebra, or Other Zoo Animal

Tokyo cartographers create cycling routes that resemble wild animals.


Making a Game Out of Town Hall Meetings

By awarding points for civic participation, MindMixer has helped cities across the country increase citizen engagement.

VTT Technical Research Centre of Finland

What if You Could See a Building's Impact in 3D Before It's Built?

Using augmented reality, people can see how proposed projects could benefit or burden their neighborhood.

Map of the Day: The Digital Neighborhood

What Foursquare can teach us about how people use a city.

Explaining the City in 5 Videos

These films offer fresh insights into urban living.

Wicked Delicate Films

Does City Life Have to Mean Life Without Stars?

A new film explores what we lose when light pollution cancels out the night sky.

Would You Be Better Off in a Different City?

A new tool from the Sunlight Foundation aims to quantify real-world differences in quality of life across the country.


Sparrows Actually Change Their Tune To Sing Over the Noise Of the City

A study in San Francisco's Presidio District suggests birds are adapting to the increasingly noisy city.


The Best City Websites for Online Engagement

Local government sites increasingly embrace social networking, but is it working?

Discovery Channel

The Sad Truth About Food-Delivering Robots

The failure of San Francisco's "TacoCopter" is just one example of how we are failing at creating a functional, robotic delivery boy.


A Fix for America's Silent Sewer Scourge

Hundreds of U.S. cities still rely on antiquated systems that spew sewage during floods. Here's how one company is trying to change that.


What's Missing From Universities' Sustainability Push

Lessons on environmentalism should be worked into course offerings, not just infrastructure.


Pink Lights, Talking Cameras, and High-Pitched Squeals: The World's Weirdest Anti-Loitering Technologies

Do any of these annoying strategies actually work?