Climate Week NYC 2024

Ambitious, inclusive climate action can happen—and cities are leading the way.

There is no time to lose.

Green outline of Earth on a black background, with a white arrow and text pointing to New York City.
© C40 Cities
Explore our cities
C40 has 96 member cities
Making up more than 22% of the global economy1

Accelerator Reports

2023 Reports Now Available

Since 2017, 74 forward-thinking C40 cities have been driving transformative action in critical sectors through C40’s High-Impact Accelerators.

In the latest Accelerator Reports, we celebrate the progress and impact of cities’ climate actions.

© Laure Rees-Smith – C40

Latest News

September 20, 2024
Mayors, governors and subnational leaders call for greater action on fossil fuels from Heads of State at UN Summit
Find out more
September 18, 2024
Eight million climate migrants predicted to arrive in ten Global South cities by 2050 if emissions don’t fall
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September 18, 2024
Schools Reinventing Cities: Driving youth engagement through technology and play
Find out more

Sources:
1. Oxford Economics data + C40 modelling and World Bank for global GDP.

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