No cars, no waste, no pollution. Doable? Such a city is slated to rise from the oil-rich grounds in Abu Dhabi. Masdar, which means "the source" in Arabic, is a $22-billion undertaking that could be the world's first carbon-neutral city [source: Masdar].
Masdar's sustainable urban development will take advantage of wind, hydrogen and solar-photovoltaic energy sources. Wastewater will be treated and recycled into irrigation systems.
In addition, Masdar's transportation goals are ambitious. Fossil-fuel burning cars are banned from the city in lieu of an electric personal light-rail system -- small, programmable cars that run only when you need to go somewhere, and a pedestrian-friendly city layout.
Masdar is already under construction and will develop over several phases, with completion expected in 2016 [source Inhabitat]. Up to 50,000 people are expected to live in Masdar, and the first residents will likely move in sometime during 2009 [CNET].
The time of the carbon-neutral city is upon us. And if these projects make the jump from paper to reality successfully, they might even earn a spot on our list of existing amazing green cities.