Los Angeles

How Mass Transit Helps Convey the Future in 'Her'

The film may be set in L.A., but cars take a back seat.

Should Cities Ditch Their Mayoral Mansions?

This outdated tradition may cause new mayors more headaches than its worth.

In Los Angeles, Walking Illegally Is More Than Twice as Expensive as Parking Illegally

The city is cracking down on jaywalking.

Definitive Evidence That L.A.'s New Light Rail Line Reduces Driving

A carefully controlled study of the Expo line shows that vehicles miles dropped 40 percent.

Los Angeles Bans Heat-Sucking Roofs

From now on, the city's building code will require new residential construction to include "cool roofs" capable of reflecting sunlight.

Your Neighborhood Significantly Influences the Air You Breathe

Levels of pollution exposure can vary dramatically within a city.

We Don't Know Nearly As Much About the Link Between Public Health and Urban Planning As We Think We Do

Car culture may not be making us sick. Cities aren't necessarily healthier than suburbs.

The Deeply Private Information Hidden in Plain Sight

A project mapping every pool in Los Angeles raises awkward questions about the tradeoff between privacy and big, public data.

Bill Bratton Will Head the NYPD. Can He Keep Bill de Blasio's Stop-and-Frisk Promise?

What today's appointment means for the future of crime fighting in New York.

Why Correcting Misperceptions About Mass Transit May Be More Important Than Improving Service

Attitudes toward public transportation and concerns about safety have a huge influence over whether or not a person rides.

Why U.S. Cities Have Been Making it Harder to Feed the Homeless

Los Angeles is the latest city to consider a ban on providing meals to the homeless in public.

3 U.S. Metro Areas Have Economies Larger Than Sweden

And other eye-popping comparisons.

Tracing the World's Most Complicated Roadways With GPS Data

How highway interchanges become beautiful color-coded open-source maps.

How Your Mode of Travel Shapes Your Mental Map

Active travelers like walkers have a more complete sense of space than passive ones.

Los Angeles Staged an Opera Inside Its Biggest Train Station

The audience wore wireless headphones inside Union Station to experience Invisible Cities.

HIV Is Still Very Concentrated in America's Cities

Ninety-two percent of new diagnoses occur in just a quarter of U.S. counties, and most of them are urban.

Where This Season's NBA Players Come From: L.A., New York and ... Saginaw, Michigan?

Big cities may produce the most players, but the smaller ones have much higher efficiency ratings. 

More Billionaires Live in Beijing Than in Los Angeles

But that may change next year.

An Intriguingly Detailed Animation of How People Move Around a City

Watch the commuting patterns of New York, San Francisco and Los Angeles.