The breathtaking expansion of São Paulo’s green space
By C40 Executive Director, Mark Watts I’ve just returned from Brazil, where the nation was responding to the tragedy of...
Climate action starts on our plates
C40 Executive Director Mark Watts went back to school to learn about all things sustainable food, from an institution paving…
The end of the fossil fuel era is in sight
C40 Executive Director Mark Watts reflects on the outcomes of COP28
C40 Co-Chair Mayor Aki-Sawyerr delivers speech at UN Secretary-General’s event
Recently elected C40 Co-Chair Mayor of Freetown Yvonne Aki-Sawyerr delivered impactful words at the UN Secretary-General's event at COP28.
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...