World Mayors Summit Day 1
The World Mayors Summit 2025 opened with a powerful plenary as the Mayors of London, Freetown, and Rio de Janeiro...
There’s something new on climate coming out of China
Mark Watts, Executive Director of C40, explores why China's "irreversible" green transition and growing global ambition are offering a new…
C40 at 20: Two decades of transformative global climate action
How C40’s model of collaboration will shape the future of global climate action To mark its 20th anniversary, C40 is...
UN review of national climate plans sees greater support for local action role
Ahead of COP30 in Belém, Brazil, a United Nations analysis of the latest national climate plans has a clear message:...
Cities join C40’s fifth Students Reinventing Cities competition, inviting youth to design green and thriving neighbourhoods
Students Reinventing Cities, C40’s global design competition for young people to reimagine cities, launches its fifth edition today, inviting students...
Inclusive Climate Action guidance and highlights from the Southeast Asia Regional Academy in Quezon City
C40 Cities and the Quezon City Government co-hosted the 2024 Southeast Asia Regional Academy, themed ‘Mainstreaming Inclusion in Cities: Global...