C40 Co-Chairs Mayor Aki-Sawyerr and Mayor Khan react to COP28 final agreement
As COP28 negotiations ended, an agreement was penned, with governments reaching a historic, first-time consensus to transition away from fossil...
Cities and businesses call for the urgent phaseout of fossil fuels
By Mark Watts, C40 Executive Director, and María Mendiluce, CEO of the We Mean Business Coalition
“We cannot end the era of fossil fuels without working together” – C40 Co-Chairs address Heads of State ahead of COP28
By C40 Cities Co-Chairs Yvonne Aki-Sawyerr, Mayor of Freetown and Sadiq Khan, Mayor of London Dear Heads of State, We...
In Focus: UN Climate Ambition Summit and NYC Climate Week
A round-up of C40's highlights, key announcements and mayors' global climate leadership from the UN Climate Ambition Summit and NYC…
Empowering all: The just energy transition in Latin America
We explore cities across Latin America that are taking accelerated action to cut demand for fossil fuels and lead a...
From oil fields to green jobs: a path to a sustainable and resilient economy in Los Angeles
Learn about Los Angeles's journey to reduce emissions, improve residents' quality of life, and create good green jobs.