Tech

Albert Gea/Reuters

Barcelona Says Goodbye to Older Cars

Get ready for Europe’s biggest car ban yet.

Patrick Semansky/AP

Using Astronomy To Fight Urban Blight

In a partnership with Johns Hopkins University, Baltimore is borrowing a trick from stargazers to predict housing abandonment.

Mike Hutchings/Reuters

This Month in Urbanism: March 2017

A sampling of city-focused events around the world. This month: bikes, land, water and mayors.

City of San Diego

The Key to San Diego's Water Independence: Sewage

The city’s ambitious Pure Water project aims to combat drought and harsh economics with reclaimed wastewater. But first, the public will have to get used to the idea.

Pablo Sanchez/Flickr

Singapore Commuters Can Soon Use Credit Cards to Board Public Transit

Straphangers won’t have to put money on a separate fare card to ride buses and trains.

Kacper Pempel/Reuters

A Playbook for How Cities Should Share and Protect Data

A detailed guide from Harvard helps governments protect residents’ personal information in open-data initiatives.

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Stanza

DIY Your Own City Symphony With This Database of Urban Noise

The London artist Stanza has been crowdsourcing sounds from various cities since the ‘90s and wants people to use them for personal projects.

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New World Symphony

Turning Street Noise Into a City Symphony

An MIT composer is collecting snippets of sound to turn Miami and Philadelphia into audio masterpieces.

Dave Kaup/Reuters

When the Machines Take Our Jobs, Will We Be Freed?

MIT’s Erik Brynjolfsson on the automated future of work.

Thomas Peter/Reuters

Hiroshima's Quest to Symbolize Peace, Not Destruction

Tourists flock there to see “the most destructive force ever created by humankind.” But the Japanese city wants people to look beyond the bomb.

Flickr/Mr/Hicks//Kitty Terwolbeck/Brad Geddes/xoMEox

How to Teach a Car a Traffic Sign

Before self-driving vehicles can truly operate autonomously, they’ll need to master Street Sign 101. They might be almost there.

Hans Pennink/AP

Attention, State Government Watchdogs: You Might Need This

A new search engine called Digital Democracy can comb through videos, transcripts, and records of what goes on in America’s statehouses.

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Sebastian Meier

A Data Visualizer Created a Mossy Map of Berlin's Green Spaces

Sebastian Meier used vegetation and a laser cutter to show the city’s parks and ponds.

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Kfir Bolotin/City of Tel Aviv

The City Obsessed With Dogs Made an App Just for Them

It was only a matter of time before a canine-friendly app sprung up Tel Aviv.

Andy Clark/Reuters

Could Immigration Policy Turn Vancouver Into Silicon Valley?

The Canadian city already hosts a range of companies, from Amazon to Hootsuite. After President Trump’s executive order, it could really capitalize on a tech sector built by foreign workers.

Keith Srakocic/AP

Pittsburgh Mayor: 'We Follow the Constitution, Not Executive Orders'

Bill Peduto talks about why he joined airport protests, his take on the Uber backlash, and the perils of a being a sanctuary city in the Rust Belt.

Carl Paulaner Hefe-weizen/Flickr

Oslo Offers Citizens $1,200 to Buy an E-Bike

The goal is to help residents—rich and poor alike—find a new reason to leave the car at home.

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DLR/DFD

An Elegant Monochrome Map of the World's Settlements

German scientists made this excruciatingly detailed simulacrum of the “global urban footprint.”