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Mixed-Use Neighborhoods May Be Safer, Too

New research from Los Angeles finds that crime rates are lower in communities with both commercial and residential uses.

The Frightening Effects of the NYPD's 'Mapping Muslims' Program

"Everybody's an informant."

Rio's Mad Scramble: Will the City Be Ready for the World Cup?

Weather, worker strikes, and structural problems have set back the renovation of the historic Maracanã Stadium as FIFA's deadline looms.

Providence Wins Mayors Challenge Prize for Early Childhood Project

The $9 million Bloomberg Philanthropies contest also awards innovations from Chicago, Houston, Philadelphia and Santa Monica.

No Big Deal: 3,000 More Dead Pigs Found in the Huangpu River

That brings the total to about 6,000 dead hogs since Monday, but authorities claim the water is just fine.

Now These Could Be Useful: Pedestrian Penalty Cards

Cory Bortnicker takes a humorous approach to enforcing sidewalk etiquette.

The Streetlight of the Future Will Do So Much More Than Light Your Street

It could also catch criminals, broadcast WiFi and... detect meth labs?

New York's Green Roofs Are Crawling With Fungi

And the fungal communities are quite different from what's found in the city's parks.

Why It's Nearly Impossible to Make GPS Work for India

A "classic example of copy-pasting a first world solution in an emerging economy."

Phoenix Just Might Be Serious About Building 'The Pin'

A honey dipper-shaped observation tower inches one step closer to reality.

Timelapse of the Day: How Nature Changes in a New York Year

A seasonal tribute to New York City.

Introducing the $32,000 Lamborghini ... Bicycle

A luxury personal transportation option for the car-free generation.

How to Protect the Rockaways From Another Sandy

A community bands together to call for change, but it's not clear what exactly needs to be done.

A City in Waiting: Outside St. Peter's Basilica

Crowds descend to await the announcement of a new Pope.

How Your Politics Influence Your Household's Carbon Footprint

Research finds that Republicans are more likely to crank up the AC in the summer.

A Biker Chronicles His Trip From London to Hong Kong Via Instagram

Rob Lutter has spent the last 19 months biking across Europe into Asia.

The Atlantic Cities and Yahoo! News Live Chat On the New York Soda Ban

Join in as we discuss how far city governments can go to push people to protect their health.

What It Looks Like to Be a Traveling Salesman in 2013

Stu Larkin, seller of bronzed baby shoes, offers us a rare glimpse into small-town Americana.

Cory Booker Is an Old-School Politician Disguised as a New Media Maven

Booker's SXSW debut had all the makings (and soundbites) of a man who intends to continue his meteoric rise.