Top 10 cities: Eco-City ranking

Mercer, a New-York based human resource and related financial services consulting firm, published its Eco-city rankings 2010. Eco-City Ranking 2010 includes the following criteria: water availability, water potability, waste removal, sewage, air pollution and traffic congestion.

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Mercer, a New-York based human resource and related financial services consulting firm, published its Eco-city rankings 2010. Eco-City Ranking 2010 includes the following criteria: water availability, water potability, waste removal, sewage, air pollution and traffic congestion. Calgary, Canada, is the world's top in the ranking.

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It is followed by Honolulu, Hawaii.

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© RIA Novosti . Sergey Subbotin

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Ottawa, the capital of Canada, holds the third position.

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© RIA Novosti . Alexei Danichev

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Helsinki, the capital of Finland, shares the third position.

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Wellington, the capital of New Zealand, retains the fifth spot.

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Adelaide, South Australia, holds the seventh place.

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© RIA Novosti . Alexander Yuriev

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It is followed by Copenhagen, the capital of Denmark.

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© Sputnik / Michail Fomichev

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…Oslo, the capital of Norway…

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© RIA Novosti . Sergey Guneev

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… and Stockholm, the capital of Sweden.