It also used to be described as the green city in the sun, but now it more resembles a concrete jungle.
They hit the ground on green modes of transport to take on the Green City Challenge, picking up the best of green initiatives in a city heaving with mechanical and human traffic.
Construction just commenced on a new 90, 000-square-foot store in North Portland that will be home to not only the largest green roof in the green roof-happy city of Portland, but the largest green roof in the entire state of Oregon.
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Nicola Payne, 18, was last seen in the Henley Green area of the city on 14 December 1991.
Our day ended with a robust discussion about the future of Kansas City and the Green Impact Zone with local leaders and members of the community.
The Supreme Court, which gave the green light to Mexico City's abortion law, is mulling whether its gay weddings infringe the constitution.
Gwyneth Jones, of the Pound Green Commoners' Association which looks after the common, said Mr Chance probably came to the Worcestershire green to escape city life.
In the city, 182 lodges and 92 bands snaked through the city centre to Glasgow Green, where a rally was held.
In the U.S. IBM and Cisco have long been championing the idea that city planning is the ultimate green solution.
The first tree in Reykjavik was planted in 1884 and now the city is relatively green.
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Before the Communists came to power in 1949, travellers reported an eighth wonder of the world: a green if dusty city, largely unaltered from the medieval plan laid out under Kublai Khan and built upon by the Ming (1368-1644) and Qing (1644-1912) dynasties.
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Organisers say the site, near Emerson's Green to the north of the city, will create 6, 000 jobs.
There are also plans to "green" the city with more plants and trees.
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The Japanese electronics giant heads up a coalition of investors and other companies to erect a planned green district in the city of Fujisawa.
Their front yard was torn up after replacing a sewer line, so instead of replacing the dirt with grass, one Oak Park woman put in a vegetable garden and now the city is seeing green.
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In addition to their daily City Bike Tour, this environmentally-friendly company offers a seasonal 15-mile autumn foliage tour along the Emerald Necklace, a network of parks and green spaces southwest of the city centre.
Green startups have their company base in Pittsburgh because of how strongly the city welcomes and supports green technology and environmentally friendly innovation.
It wasn't long ago that the idea of using "green" and "city" in the same sentence seemed absurd.
Even as the Danes, Spanish and Germans were cornering the market in turbines, the City of London was developing green-energy services.
Joan Clulow, 71, was one of the women who was part of the Abdulla group and worked as a home carer for the city council in Bartley Green and Weoley Castle for 27 years.
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The Kulturpark, whose high walls protect a vast tranquil tract of green in the heart of the city, will be an oasis of budding creativity, with workshops for artisans and interchanging exhibitions when it opens in June.
He visits a Russian farm to look at the country's ambitions to be an agricultural superpower, checks out the Star City astronaut training center, meets with seven-foot boxing world champion-turned-movie star Nikolai Valuev and talks along the way with entrepreneurs and environmentalists working to make the city of Sochi home to green Olympics in 2014.
The model is Cabrini Green, which sits near some of the city's most valuable property.
The original inquiry recommended Ashton Vale become a town green but Bristol City Council went against the decision.
The third Democrat, Mr Green, New York city's public advocate, is the most liberal of the three: he calls for universal health coverage for children and pregnant women.
Could the city's green policy, and world in general, afford an economic recession, asked co-host Stephanie Mehta.
While other green spaces inside the city limits are rare, a few casino hotels have gardens for making your escape from the smoke-filled gaming areas.
The city's green bus-priority lanes, more extensive and heavily enforced than in other places, have reduced journey times by up to 25% and greatly increased passenger numbers.
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