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The Real Genius of Bloomberg's Plan to Convince You to Take the Stairs

This is nothing like banning soda.

How Sprawl Makes Fighting Childhood Obesity So Much Harder

Walking to school shouldn't be a big deal. But it's become one because of short-sighted planning and dangerous, difficult roads.

Death Toll Rises to 78 in Spanish Rail Disaster

Firefighters described a grisly scene that looked like "hell," with train cars torn in half and dozens trapped under burning wreckage.

This Is What Brooklyn's Transit System Looked Like a Century Ago

Even around 1918, the public-transit system in New York was fairly robust.

The Atmospheric 'Rivers' That Explain Why Flooding Has Gotten So Vicious

Imagine the amount of water pouring out the mouth of the Mississippi River, times 15. That's what these things move through the air over time.

Just How Crazy Is China's Plan to Build the World's Tallest Building in 9 Months?

In the time it takes to gestate a baby, architects say they'll have finished a structure that hits 838 meters — ten meters higher than the Burj Khalifa.

Public Space Improvement of the Day: Free WiFi for San Francisco's Parks

Google is donating $600,000 to the city, moving it one step closer to free internet for all.

A Federal Judge Has Frozen All Legal Challenges to Detroit's Bankruptcy

A victory for the city's lawyers, a defeat for public-employee unions.

These Gilded Government Buildings Explain Exactly Why Beijing Is Banning New Ones

China’s Communist Party took another swipe at excessive government spending, with a five-year hiatus on constructing state buildings.

A Very Different Reception for Bike Lanes in Brooklyn's Poorest Neighborhood

Two years of consensus-building led to a celebration, not a protest.

You're More Likely to Die a Violent Death in Rural America Than in a City

Yes, homicide-related death rates are higher in urban areas, but you're twice as likely to die in a car crash outside a city.

You Will Not Believe How Much You Can Carry With a Little Bit of Ingenuity

Amazing feats of DIY transport from around the world.

Even Teenagers Don't Want to Go to Malls Anymore

Big box stores are in desperate need of reinvention. But a handful of communities might have figured out the fix.

The Jersey Shore Almost Looks Like Its Old Self Again

Thanks to the gigantic Sandy Relief bill and Governor Chris Christie's insistence on rebuilding, much of the area has made progress.

The Time the Teacher's Union Saved New York From Bankruptcy

In October 1975, only the whims of a union leader separated the city from default.

There Will Always Be a Place for Great Bookstores

The business of publishing and selling books will continue its radical change. But some things are eternal.

The Exquisite Geometry of Global Flight Paths

As revealed by a billion dots of color.

How to Photograph a Bankrupt City

Kirk Crippens has been taking pictures of Stockton, California, since its housing bubble famously burst.

Cities Might Not Be as Prepared as They Think for a Bioterrorism Attack

Smallpox maliciously released in London would spread to several countries before governments could intervene, a new model predicts.