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An emissions trading program would force airlines flying in and out of European Union airports to cut emissions by 3 percent in 2012, and by 5 percent after 2013.
Famous for its green landscapes and even greener citizens, Oregon's Emerald City is an environmental wonderland.
An insider’s guide to the forward-thinking, earth-friendly tourist mecca: London.
It's sprawling and crawling with stars, wannabes and tourists, but the City of Angels also has plenty of green character -- if you know where to look.
Beyond its touristy beachfronts, the Aloha State offers an island Eden for eco-travelers.
Despite its Texas-sized sprawl, Houston doesn't have a problem with going green.
For a city so steeped in revolution, going green is a walk in the park.
Red and black make room for green in the Classic City.
With cleaner air and a greener flair, the formerly filthy Scenic City now lives up to its name.
Emerald City earns its nickname with a flurry of green offerings.
The green rose of Texas is more than just a live-music hub — although it's still pretty good at that, too.
Eco-tourism and renewable energy help Caribbean island stand out from the crowd.
With green hotels, vegan grub and the nation's oldest wildlife refuge, Oaktown stays true to its roots.
The City of Lakes is making a smaller splash with its sustainability and conservation efforts.
Outdoors enthusiasts and eco-adventurists head for higher ground.
Pop-culture expert writes about entertainment, arts — and the occasional zombie.
Travel and style pro blogs about smart consumption and conscious living.