C40: 2022 highlights
With contributions from C40 Chair, Mayor of London Sadiq Khan, and C40 Executive Director Mark Watts Foreword by C40 Chair,...
Cities are serious about tackling air pollution
By Claudia López, Mayor of Bogotá The Mayor of Bogotá explains how London’s Ultra Low Emission Zone (ULEZ) inspired Bogota’s...
Global Mayors will tackle the climate crisis at C40 World Mayors Summit
Mayors will gather in Buenos Aires for triennial conference on local climate action and securing a sustainable, equitable future Summit...
London Mayor Sadiq Khan joins Mayors from Freetown, Bogotá and Bristol to launch the World’s To-Do List
The campaign will unite global city leaders in their commitment to leverage the power of local action to achieve the…
C40 releases 2021 Annual Report
An excerpt from C40's 2021 Annual Report written by C40 Chair Mayor of London Sadiq Khan and C40 Executive Director…
C40: 2021 in focus
A round-up of the key activities and achievements of C40 Cities in 2021.