20 Years of C40 Cities: Local Leadership Driving Global Climate Action
From London in 2005 to 97 of the world’s largest cities in 2025, C40 Cities marks two decades of unwavering...
Mayors from C40 cities around the world arrive in London for Europe’s largest city-wide climate festival
London, UK (23 June 2025) – Mayors from across the C40 network, representing cities on five continents, have arrived in...
10 years on from Paris, why cities and local leaders are the best hope for climate action
COP30 this November marks a decade since 196 states signed the Paris Agreement on a collective response to the climate…
Celebrating 10 Years of Results
In 2005, then-Mayor of London Ken Livingstone brought together 18 mayors from some of the world’s largest urban centers to…
C40 Cities pays tribute to Pope Francis for inspiring millions with his commitment to climate justice
The Executive Director of C40 Cities, a global coalition of 97 cities working to deliver the urgent action needed to...
Cities and regions lament failure of global shipping levy talks
C40 Cities and the Under2 coalition of states and regions have criticised national governments for not agreeing on an ambitious...