C40 is a global network of mayors of the world’s leading cities that are united in action to confront the climate crisis.

Dalian Karachi Boston Warsaw Auckland Rio de Janeiro Phoenix Dar es Salaam Zhenjiang Wuhan Washington, DC Nanjing Ahmedabad Amsterdam Fuzhou Nairobi Quito Johannesburg Ho Chi Minh City Curitiba New York City Rome Barcelona Medellín Qingdao Salvador Dhaka (North & South) Mexico City Cape Town Addis Ababa Lisbon Buenos Aires Guangzhou Dalian Karachi Boston Warsaw Auckland Rio de Janeiro Phoenix Dar es Salaam Zhenjiang Wuhan Washington, DC Nanjing Ahmedabad Amsterdam Fuzhou Nairobi Quito Johannesburg Ho Chi Minh City Curitiba New York City Rome Barcelona Medellín Qingdao Salvador Dhaka (North & South) Mexico City Cape Town Addis Ababa Lisbon Buenos Aires Guangzhou

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