C40 Cities

International network of cities committed to fighting climate change

The C40 Cities Climate Leadership Group (C40) is a network that connects more than 80 of the world’s greatest cities committed to addressing climate change, representing more than 600 million people and one quarter of the global economy.
C40 was founded on the idea that cities can achieve more by working together than acting alone. Now in its 11th year, C40 is focused on tackling climate change and driving urban action that reduces greenhouse gas emissions and climate risks, while increasing the health, wellbeing and economic opportunities of urban citizens. C40’s international staff supports mayors of the world’s megacities to deliver bold, ambitious and transformational action on climate change, through the exchange of ideas, programmes and policies.
The current chair of C40 is Mayor of Paris, Anne Hidalgo, while the President of the Board is three-term Mayor of New York City Michael R. Bloomberg.

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25 cities commit to become emissions neutral by 2050

25 cities commit to become emissions neutral by 2050

Bonn, Germany — The mayors of 25 pioneering cities, including Milan, representing 150 million citizens, have pledged to develop and begin implementing more ambitious climate action plans before the end of 2020 to deliver emissions neutral and climate resilient cities by 2050. These plans will ensure the cities deliver on their share of emissions reductions

12 pioneering mayors commit to create green and healthy cities

12 pioneering mayors commit to create green and healthy cities

On 23 October in Paris the mayors of London, Paris, Los Angeles, Copenhagen, Barcelona, Quito, Vancouver, Mexico City, Milan, Seattle, Auckland, and Cape Town committed to a series of ambitious targets to make their cities greener, healthier and more prosperous. By signing the C40 Fossil-Fuel-Free Streets Declaration, the pioneering city leaders pledged to procure only

Climate change is a fact and women are tackling it

Climate change is a fact and women are tackling it

by Anne Hidalgo, Mayor of Paris and Chair of C40 Muriel Bowser, Mayor of Washington D.C. Manuela Carmena, Mayor of Madrid Ada Colau, Mayor of Barcelona Helen Fernández, Mayor of Caracas Hanna Gronkiewicz-Waltz, Mayor of Warsaw Zandile Gumede, Mayor of Durban Fumiko Hayashi, Mayor of Yokohama Patricia de Lille, Mayor of Cape Town Clover Moore,