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A Brief History of Bottle Recycling

A story of trash and class in America.

Why a Bicycle Tax Might Not Be Pointless After All

Some bike advocates see fees as a useful starting point in an inevitable discussion about sharing road costs.

Could We Model a National Energy Policy on 'Race to the Top'?

Former Michigan Governor Jennifer Granholm wants to see states and metro areas compete for green energy funding. 

Can This Building Complex Solve Dubai's Affordable Housing Crisis?

The International City was supposed to relieve the economic pressures faced by the middle class. Instead there's been nothing but problems.

How NASA Scientists Are Turning L.A. Into One Big Climate-Change Lab

Studying the emissions of megacities like Los Angeles promises to be the next big thing in combating global warming.

Building a Bicycle From Chopped-Up Auto Parts

What better way for cyclists to show their contempt for the car-driving masses than riding around on the carcass of a dismembered vehicle?

An Ode to New York's Glorious DIY Sidewalk Seating Culture

Design firm Street Plans Collaborative has started tracking informal street furniture, and you can help.

Reason to Live Somewhere Warm Of the Day: Ambulances Respond Faster

Researchers in the U.K. find that ambulance response times drop with the temperature.

Who Should Pay for Transportation?

A new generation of funding schemes turns the "user fee" on its head.

What It's Like to Play a Grand Piano in a NYC Park Every Day

Colin Huggins brings his passion for music to Washington Square Park.

A Pope Says Goodbye

The 85-year-old leader of the Roman Catholic world gives his last general address.

Mapping Data-Dense Cities as if They Were Mountains

Contour lines borrowed from natural terrain can tell us much about life in the city.

The Ku Klux Klan Protests as Memphis Renames a City Park

Many white Southerns have cherished the memory of Nathan Bedford Forrest -- a Confederate general and founding Klansman. But a new controversy reveals how much Civil War remembrance has changed.

What's at Stake in the Voting Rights Act Case

As the Supreme Court prepares to hear arguments challenging the Voting Rights Act of 1968, civil rights advocates are rising to support the anti-discriminatory law. But why?

If Only Every City Had a Masked Lucha Libre Defender of Pedestrians

Peatónito is the alter ego of Jorge Cáñez, a 26-year-old political scientist in Mexico City.

Philippe Starck Designs a Bike-Share Scooter-Cycle in France

Is this the hippest bicycle in the world?

Coming Soon to a Cab Near You: Vending Machines?

A modernized vending machine for taxis and bars is preparing for launch in New York.

Is Boston Ready for an Apartment Building That Bars Cars?

A proposed development in the city underscores the tradeoffs and design challenges of building cities around the car.

Meet the Former NASA Scientist Who's Teaching Coloradans How to Grow Marijuana Legally

Dale J. Chamberlain's HASH courses are specifically designed to comply with Colorado's new cannabis law.