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…
What happened at London Climate Action Week?
Catch up on C40's highlights from the 2024 London Climate Action Week
Urban loss and damage
How cities are taking inclusive climate action to create an equitable, safe and thriving future for all.
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…
C40 releases 2023 Annual Report
Read the foreword by the C40 Co-Chairs, Mayor of London Sadiq Khan and Mayor of Freetown Yvonne Aki-Sawyerr