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The Tragedy of Modern Retirement Communities

When America's first "active" retirement communities opened, average life expectancy was 69.7. Now it's 78.7

A Look Back at 1951's 'Big Squirt,' California's Improbable Drought Remedy Concept

Why not use a network of cannons to shoot water to parched farms? Oh, right – for lots of reasons.

Map of the Day: New York's Geography of Complaining

Garbage is an issue.

Indian Trains Will No Longer Dump Human Waste Onto the Tracks

Also, a look at Singapore's intense campaign to reform dag-nasty bathrooms.

The Terrifying Reality of Europe's Youth Unemployment Crisis, in 1 Chart

In March, youth unemployment hit 50 percent in Greece. Six months later, it's only gotten worse.

Sustainable Transportation Simply May Require a Top-Down Approach

Mandated planning improves metro area transit patterns, but maybe not enough.

Smartphones As Bicycle Lights: Still Not Catching On

The latest entrant claims to be more convenient than a standard bike-safety light, but we've got a few concerns.

Why Losing Google Maps on the iPhone Is a Good Thing

Apple Maps is so flawed it's forcing users to discover even better, city-specific alternatives.

Thousands of Gandhis March Through India's Streets

Celebrations in time for the former leader's 143rd birthday.

Can We Recreate the Theater of the Street On Screen?

A marketing campaign's cameras turn a select number of public spaces into stages.

Paying People To Plant Trees

A Chicago group is fighting storm water pollution and heat islands by offering rebates to people who buy trees or rain barrels.

L.A.'s 'Carmageddon' Produced Dramatic, Instantaneous Air Quality Improvements

Researchers measuring pollution during last year's 405 closure find air quality improved by as much as 83 percent.

Africa's Urbanizing, But Not How You Think

Urban growth isn't necessarily streaming in from the countryside.

The Uneven Geography of U.S. Economic Growth

The U.S. economy is made up of hundreds of metro regions that grow and decline at different rates.

In Amsterdam, a Tale of Love and Killer Robots

Nerds crowdsource a sci-fi adventure that imagines the city as a post-apocalyptic wonderland.

Absurd Traffic Obstacle of the Day: The Minneapolis Bike Matador

Ole!

The Secret to D.C.'s Budget Surplus? Traffic Cameras and Rich People Dying

Also, high per capita incomes and a booming population.

The Bed Tent: A Solution for Nosy Roommates?

Many city dwellers might not realize they need a bed tent. They're probably correct.

Why Reviewing Brooklyn's New Arena Before It Opened Was Premature

Barclays Center can't be assessed as a standalone building; its impact on the surrounding neighborhood must be taken into account.