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Clean Air

Press Release

July 25, 2024

C40 Cities mayors launch global air quality marathon as new poll reveals widespread support

Mayors from C40 cities gather in Paris to launch 'It's In The Air' – a global C40 campaign highlighting people-focused…
Press Release

January 19, 2024

Guadalajara announces Mexico’s first low-emission zone, joining the global movement for cleaner air

Guadalajara has announced its plans for Mexico's first low-emission zone (LEZ), joining the global movement for clean air and safer…
In Focus

December 4, 2023

COP28 catch-up #1: What have city leaders been up to?

Check out our highlights from 30 November – 4 December at COP28
Press Release

December 2, 2023

Breathe Cities unveils new cohort of cities to join ambitious initiative to fight toxic air pollution

Announced at COP28, the new Breathe Cities cohort includes Accra, Brussels, Jakarta, Johannesburg, Milan, Nairobi, Paris, Rio de Janeiro and…
In Focus

May 2, 2023

Green News Digest: Cities tackling air pollution for a healthier future

Learn about how mayors of C40 cities are making their cities more liveable, safer, and healthier while reducing emissions.
Thought Leadership

November 2, 2016

Planting Healthy Air: A Natural Solution to Address Pollution and Heat in Cities

Can nature help cities address the twin problems of air that is too dirty or too hot? Based on a…

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C40 Cities

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