Mayors, governors and subnational leaders call for greater action on fossil fuels from Heads of State at UN Summit
Ahead of the UN Summit of the Future, mayors are urging Heads of State to step up action and leave…
Clean Air Zones – A Win for People and the Planet
What Mayor Hidalgo is achieving in Paris has been an inspiration for cities around the world, and today, C40 is…
C40 Cities mayors launch global air quality marathon as new poll reveals widespread support
Mayors from C40 cities gather in Paris to launch 'It's In The Air' – a global C40 campaign highlighting people-focused…
Building a sustainable future for everyone, everywhere
The European Union should follow cities' lead to create a prosperous and safe future. Letter from C40 Europe mayors to…
Pope Francis and C40 mayors chart course for climate resilience
C40 mayors met His Holiness Pope Francis for the Vatican's climate resilience summit and made a united call for stronger…
C40 mayors attend Vatican climate summit, sign crucial climate protocol
C40 Co-Chair Mayor Sadiq Khan and 8 C40 mayors will meet with Pope Francis at the Vatican for the ‘Climate…