The World is Watching Cities

COP21 brought cities into the spotlight. C40 is proud to help shine that light a little brighter. Because cities and mayors are acting now, and we're right beside them as they become necessary leaders in this vital cause.

As the world moves forward from Paris, we're showcasing stories that help explain why cities are so critically important for implementing on the goals set forth in that historic accord. C40's road from Paris moves through member cities Beijing for the Second China-U.S. Climate-Smart Low-Carbon Cities Summit; Singapore for the World Cities Summit; Quito for Habitat III; and later in the year, Mexico City for the sixth biennial C40 Mayors Summit

The C40 Mayors Summit Draws Near

A Welcome Message from C40 Leadership

The sixth biennial Mayors Summit, C40’s flagship event, will take place in Ciudad de México from November 30 – December 2, 2016. Hosted by Mayor of Ciudad de México Miguel Ángel Mancera and led by current C40 Chair, Mayor of Rio de Janeiro Eduardo Paes, and Chair Elect Mayor of Paris Anne Hidalgo, the event draws mayors and leading thinkers from around the world to advance a shared agenda through collaboration and knowledge sharing, and increase visibility about the global potential of climate actions in cities. 

Learn more about this important event, where the world's leading mayors meet to tackle climate change together.

From the Office of the Chair


C40 Chair and Rio de Janeiro Mayor Eduardo Paes is a global ambassador for cities. Learn more about this important thought leader and follow a curated list below of key acheivements from Mayor Paes and his home city of Rio.