Youth climate leaders and mayors unite to launch first-ever global network of city-youth climate councils 
Youth leaders and mayors pledged to remain united to ensure young people are engaged in every city to deliver climate…
Urban 20 mayors call on G20 to foster a sustainable economic and social recovery for all
At the Urban 20 Summit in Jakarta, city leaders sign a communiqué calling for more investments in sustainable mobility and…
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...
C40 launches urban design competition in 12 cities to transform underutilised sites into low carbon urban projects
The third edition of Reinventing Cities launched today, inviting creative multidisciplinary teams – including architects, developers, community groups and more...
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.