C40 Cities

Two new reports lay out suggestions for city leaders and case studies from around the world.
David Hatch March 10, 2017
Uncertainty prevails after a year of progress and setbacks.
Gregory Scruggs December 13, 2016
Athens, Madrid, Mexico City and Paris will phase out the technology over the next decade, while announcing commitments on climate and air quality.
Gregory Scruggs December 8, 2016
Sydney mayor assures: 'There is so much you can achieve even if you do have a government that is not supportive.'
Gregory Scruggs December 6, 2016
National plans to cut greenhouse-gas emissions are still coming together — and perhaps falling apart in the case of the U.S. But the winning cities of this year's C40 Awards are already making big progress.
Gregory Scruggs December 1, 2016
Event will mark ‘policy, science and practice evolving together’, expert says.
Gregory Scruggs November 16, 2016
Cities won landmark recognition at last year’s Paris negotiations. What are they hoping to get out of the first formal follow-up to those talks?
Gregory Scruggs November 7, 2016
In an interview, C40’s Seth Schultz says groups like his are embarking on a long-term commitment to work directly with the research community to support sustainable urbanization.
October 6, 2016

City networks have gained favor because they facilitate idea-sharing and public-private partnerships, Nature reports. 

October 5, 2016

City planners can answer ‘what-if’ questions on climate policies they might use, the World Bank says. 

September 29, 2016

Winners in ten categories will announced in Mexico City on December 1.

September 21, 2016

Green bonds and emissions-trading schemes are among the options detailed by Siemens, the C40 Cities Climate Leadership Group and Citi.

July 22, 2016
In December in Paris, mayors demonstrated they are key players in the response to climate change. Habitat III can now strengthen global momentum and respond to the mayoral call to put climate-change mitigation and adaptation atop the urban agenda.
Emmanuelle Pinault and Mandy Ikert and Zachary Tofias February 8, 2016
U.N. released “Guiding Principles for City Climate Action Planning”.
Gregory Scruggs December 4, 2015
Mayors and other local officials set to make strong showing at Paris summit.
Gregory Scruggs November 30, 2015
New report boosts local actors’ efforts at reducing emissions ahead of Paris climate summit.
Gregory Scruggs October 22, 2015
'Simplify the messaging around energy efficiency', and other lessons from the Australian city.
Brendon Bosworth October 9, 2015
Mayors and officials from 12 U.S. cities will take part in summit as Local Climate Leaders Circle.
Carey L. Biron September 3, 2015
New website will track actions by cities, regions and companies for the six months leading up to the Paris talks.
Carey L. Biron June 8, 2015
Mayors are pushing for a bigger role for local governments at global climate talks.
Neal Peirce May 21, 2015
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