Why Cities?
Why are cities so important? Learn more about the crucial role cities play in taking the lead in working out solutions to global climate change.
Join the Conversation
Join the conversation about climate change with some of the most engaging and influential voices on Twitter. (The content of these Twitter accounts is solely the responsibility of their owners.)
Organizations and institutes
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Media and journalists
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Influencers
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Get Involved
Easy ways to cut your carbon
From unplugging ‘vampire’ devices to planting native species and buying more local food, we’ve collected 11 simple things you can do to reduce your own carbon footprint, and that of your city.
Spread the word
With 90% of the world’s urban areas situated on coastlines, cities are at risk from the impacts of climate change. @C40_cities #ycities
