Study Finds that CO2 Emissions in 27 Cities Have Declined Since 2012

By Anna Breuer on 14 September 2018
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The Little Mermaid in Copenhagen

CO2 emissions in 27 major cities have been declining by an average of 2% each year since 2012, according to a report by the C40 Cities Group.

The list of cities includes London, New York, Paris, San Francisco, and Toronto and shows that greenhouse gas levels were a minimum of 10% higher in 2012, when CO2 emissions peaked, than in the most recent study. The drop occurred even while the cities’ economies expanded by 3% annually along with substantial population growth.

„This is the result of no revolution, but of a steady evolution in the life of our city, namely in the way we move around and in the way we reduce, recycle and reuse waste,” said Giuseppe Sala, mayor of Milan.

The report says that the decline in greenhouse gas levels is not attributable to one specific factor but, rather, that due to the shift to renewable energy, the more efficient use of electricity, increased efficiencies in transportation that provide alternatives to private cars, cutting waste while increase recycling, and a reduction in methane from landfills.

Other cities on the list are Barcelona, Basel, Berlin, Boston, Chicago, Copenhagen, Heidelberg, Los Angeles, Madrid, Melbourne, Milan, Montréal, New Orleans, Oslo, Philadelphia, Portland, Rome, Stockholm, Sydney, Vancouver, Warsaw, and Washington D.C.

(Photo: Accura Media Group)