Tech

CoffeeCar.org

Somebody Invented a Car that Runs on Coffee

The odd vehicle, which transforms old coffee grounds into hydrogen, recently set a Guinness land-speed record.

Amazingly Dull Municipal Video Games Are All the Rage on YouTube, for Some Reason

Should the title of Most Boring City Simulator go to garbage collection, toilet cleaning or European bus driving?

John Metcalfe

How NASA Scientists Are Turning L.A. Into One Big Climate-Change Lab

Studying the emissions of megacities like Los Angeles promises to be the next big thing in combating global warming.

SERIES

City Makers: Global Stories

The people and ideas reshaping urban life

Maps
Chris Herwig

Mapping Data-Dense Cities as if They Were Mountains

Contour lines borrowed from natural terrain can tell us much about life in the city.

CityFixer
Reuters

Europe's Emerging Consensus on Low-Emissions Zones

Critics of London Mayor Boris Johnson's ambitious air pollution plan may be missing the bigger picture.

Jacqueline Feldman

The Heated Terraces of Paris Are Safe, For Now

A ban on outdoor gas heaters from Parisian cafés doesn't look like it will be implemented anytime soon.

Maps
James Koval

Early Fruits of International Open Data Day 2013

Projects from Vancouver to Washington to Kathmandu.

The 8 Most Intriguing Finalists From the Bloomberg Philanthropies' Mayors Challenge

Five winners will be announced this spring, but these ideas stand out above the rest.

Maps

Twitter Data Use of the Day: Mapping the Languages of New York City

5 percent of Tweets out of the city are in a language other than English.

Introducing 'Riot,' the Video Game Based on Actual Violent Uprisings Around the World

Take on the role of violent agitators or the police in this atmospheric smartphone simulator.

An App That Tells You How Walkable a Street Really Is

Walkonomics looks at small things -- sidewalk quality, hilliness -- that make a real difference to walkers.

Lovelorn Map of the Day: Top Missed Connections Locations by State

You may be more likely to spot a potential mate at a Walmart in a whopping 15 states.

Videos
CIA.gov

The 'Insectothopter,' a Teensy-Weensy CIA Drone From the 1970s

The 1-gram listening device that flew like a dragonfly never really got off the ground.

Shutterstock

What Food Desert Maps Get Wrong About How People Eat

Our understanding of food access seldom takes into account a key factor: mobility.

Group Antro

Introducing an Electric Scooter That Folds Up Into Luggage

Hungary's MOVEO scooter looks like something baggage handlers might lose at the airport.

Maps

The Happiest Cities in America, According to 10 Million Tweets

People in Napa, California, sure are satisfied. And the saddest places all swear too much.

The Worst Cities for College-Educated Women Trying to Find a Decent Date

Stay away from Sarasota, Florida.

Maps

Here's What Would Happen if a Huge Asteroid Hit Your City

Would you dissolve in fire or would your clothes simply ignite?