The single most important action cities can take
Mark Watts, C40 Executive Director, highlights the transformative power of active travel to reduce emissions, improve health and achieve greater…
C40 announces collaboration to map consumption-based emissions in two of the world’s biggest cities
C40 Cities is thrilled to announce a new partnership with American Express to support the development of consumption-based emissions inventories…
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…
Buenos Aires to host C40 World Mayors Summit 2022
Mayor Horacio Rodríguez Larreta today announced that the City of Buenos Aires will host the C40 World Mayors Summit in…
C40: 2021 in focus
A round-up of the key activities and achievements of C40 Cities in 2021.
A letter by Mayor Eric Garcetti, Chair of C40 Cities 2019–2021
Mayor of Los Angeles Eric Garcetti reflects on his time as the Chair of C40 Cities.