3. Portland
This US City is the first to ban plastic bags and offering the people a waste free world. Another feature of Portland is that it has 250 miles of bikeways named the most friendly bike city of the American continent.
Using almost 33% of renewable energy sources, the citizens of Portland are embracing programs which help you discover the sustainable food sources. They learn how to raise chicken, bees and learn how to make cheese and cultivate their own gardens.
Probably one of the cleanest cities in the US, Portland saves 250.000 tons of CO2 a year and offers the cleaner water and air in the country.
Named tree huggers and sustainable energy lovers the people of Portland have made their business to develop the city in becoming the greenest city in the world beating New York and San Francisco.
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