C40 North America mayors’ response to wildfires and air quality crisis in the region
"As Mayors of impacted cities, we are deeply concerned about the current air quality crisis in east coast US and…
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...
C40 Network Support for Terra Carta
C40 Cities Climate Leadership Group announces its support of the Terra Carta and its underlying principles for a transition to...
Open letter to COP27 world leaders by C40 city mayors and governors
C40 mayors and city leaders today signed the following open letter directed at world leaders attending the 27th United Nations...
C40 Chair and Mayor of London Sadiq Khan applauds passage of the Inflation Reduction Act in the United States
Chair of C40 Cities, Sadiq Khan, on the passage of the Inflation Reduction Act in the United States.
C40 Cities calls on U.S. House of Representatives to pass Inflation Reduction Act
C40 Executive Director Mark Watts today issued the following statement about the U.S. Inflation Reduction Act: C40 applauds the U.S....