C40 Cities
@c40cities.bsky.social
A global network of city mayors delivering urgent climate solutions. Protecting the people and places we love. 🌳🌍🌆💚
http://www.c40.org/
http://www.c40.org/
Cities around the world are raising the bar on climate action.
By committing to a Yearly Offer of Action, mayors are taking concrete steps to get the world on track to meet the goals of the Paris Agreement.
https://www.c40.org/news/yearly-offer-of-action/
By committing to a Yearly Offer of Action, mayors are taking concrete steps to get the world on track to meet the goals of the Paris Agreement.
https://www.c40.org/news/yearly-offer-of-action/
November 18, 2025 at 5:55 PM
Cities around the world are raising the bar on climate action.
By committing to a Yearly Offer of Action, mayors are taking concrete steps to get the world on track to meet the goals of the Paris Agreement.
https://www.c40.org/news/yearly-offer-of-action/
By committing to a Yearly Offer of Action, mayors are taking concrete steps to get the world on track to meet the goals of the Paris Agreement.
https://www.c40.org/news/yearly-offer-of-action/
🇪🇺At a COP defined by action, Europe is backing the local climate agenda.
The European Union has endorsed #CHAMP, reinforcing that cities & regions are indispensable for delivering the Paris Agreement: https://c40.me/4r6zIwE
@ec.europa.eu | @mayors4climate.bsky.social | @teresaribera.ec.europa.eu
The European Union has endorsed #CHAMP, reinforcing that cities & regions are indispensable for delivering the Paris Agreement: https://c40.me/4r6zIwE
@ec.europa.eu | @mayors4climate.bsky.social | @teresaribera.ec.europa.eu
November 18, 2025 at 12:30 PM
🇪🇺At a COP defined by action, Europe is backing the local climate agenda.
The European Union has endorsed #CHAMP, reinforcing that cities & regions are indispensable for delivering the Paris Agreement: https://c40.me/4r6zIwE
@ec.europa.eu | @mayors4climate.bsky.social | @teresaribera.ec.europa.eu
The European Union has endorsed #CHAMP, reinforcing that cities & regions are indispensable for delivering the Paris Agreement: https://c40.me/4r6zIwE
@ec.europa.eu | @mayors4climate.bsky.social | @teresaribera.ec.europa.eu
“I think this COP must be the ‘COP of cities’, must be the COP of local implementation, and must be the COP of dialogue between national governments and local governments.”
- Mayor Mohamed Sefiani of Chefchaouen, Morocco & GCoM Regional Ambassador, speaking at #COP30
📽️: c40.me/4o27OiU
- Mayor Mohamed Sefiani of Chefchaouen, Morocco & GCoM Regional Ambassador, speaking at #COP30
📽️: c40.me/4o27OiU
November 18, 2025 at 10:44 AM
“I think this COP must be the ‘COP of cities’, must be the COP of local implementation, and must be the COP of dialogue between national governments and local governments.”
- Mayor Mohamed Sefiani of Chefchaouen, Morocco & GCoM Regional Ambassador, speaking at #COP30
📽️: c40.me/4o27OiU
- Mayor Mohamed Sefiani of Chefchaouen, Morocco & GCoM Regional Ambassador, speaking at #COP30
📽️: c40.me/4o27OiU
What if cities could fight climate breakdown and improve the health of residents at the same time?
@novonordisk.bsky.social and C40 Cities are helping cities like Bogotá and Rio de Janeiro transform neighbourhoods so everyone enjoys cleaner air and better health.
@novonordisk.bsky.social and C40 Cities are helping cities like Bogotá and Rio de Janeiro transform neighbourhoods so everyone enjoys cleaner air and better health.
November 17, 2025 at 12:42 PM
What if cities could fight climate breakdown and improve the health of residents at the same time?
@novonordisk.bsky.social and C40 Cities are helping cities like Bogotá and Rio de Janeiro transform neighbourhoods so everyone enjoys cleaner air and better health.
@novonordisk.bsky.social and C40 Cities are helping cities like Bogotá and Rio de Janeiro transform neighbourhoods so everyone enjoys cleaner air and better health.
When it comes to combating the climate crisis, cities like Paris, Tshwane, and Dalian are proving what’s possible.
Through the Yearly Offer of Action, mayors commit to concrete steps over the next 12 months — turning ambition into implementation.
https://www.c40.org/news/yearly-offer-of-action/
Through the Yearly Offer of Action, mayors commit to concrete steps over the next 12 months — turning ambition into implementation.
https://www.c40.org/news/yearly-offer-of-action/
November 15, 2025 at 1:15 PM
When it comes to combating the climate crisis, cities like Paris, Tshwane, and Dalian are proving what’s possible.
Through the Yearly Offer of Action, mayors commit to concrete steps over the next 12 months — turning ambition into implementation.
https://www.c40.org/news/yearly-offer-of-action/
Through the Yearly Offer of Action, mayors commit to concrete steps over the next 12 months — turning ambition into implementation.
https://www.c40.org/news/yearly-offer-of-action/
Cities are powering a cleaner, healthier future. ⚡
From Melbourne to Lagos, 15 cities in our Renewable Energy Accelerator are transitioning from fossil fuels.
A third already powers their city operations with 100% renewable electricity, building a future where clean energy is available for all.
From Melbourne to Lagos, 15 cities in our Renewable Energy Accelerator are transitioning from fossil fuels.
A third already powers their city operations with 100% renewable electricity, building a future where clean energy is available for all.
November 14, 2025 at 4:20 PM
Cities are powering a cleaner, healthier future. ⚡
From Melbourne to Lagos, 15 cities in our Renewable Energy Accelerator are transitioning from fossil fuels.
A third already powers their city operations with 100% renewable electricity, building a future where clean energy is available for all.
From Melbourne to Lagos, 15 cities in our Renewable Energy Accelerator are transitioning from fossil fuels.
A third already powers their city operations with 100% renewable electricity, building a future where clean energy is available for all.
At #COP30 cities are ready to deliver on climate 🌍
They have the ideas, the action, and the people.
Now they need predictable and accessible funding – for better transport, cleaner air, affordable housing, more resilient communities, and to create good green jobs.
They have the ideas, the action, and the people.
Now they need predictable and accessible funding – for better transport, cleaner air, affordable housing, more resilient communities, and to create good green jobs.
November 14, 2025 at 2:09 PM
At #COP30 cities are ready to deliver on climate 🌍
They have the ideas, the action, and the people.
Now they need predictable and accessible funding – for better transport, cleaner air, affordable housing, more resilient communities, and to create good green jobs.
They have the ideas, the action, and the people.
Now they need predictable and accessible funding – for better transport, cleaner air, affordable housing, more resilient communities, and to create good green jobs.
From Rio to Rotterdam, cities are stepping up to help the world get back on track in combating climate breakdown.
C40 mayors are standing together and delivering a Yearly Offer of Action - promising real results within their cities in the next 12 months.
C40 mayors are standing together and delivering a Yearly Offer of Action - promising real results within their cities in the next 12 months.
November 14, 2025 at 2:01 PM
From Rio to Rotterdam, cities are stepping up to help the world get back on track in combating climate breakdown.
C40 mayors are standing together and delivering a Yearly Offer of Action - promising real results within their cities in the next 12 months.
C40 mayors are standing together and delivering a Yearly Offer of Action - promising real results within their cities in the next 12 months.
📢 @c40cities.bsky.social and @un-habitat.bsky.social are joining forces to transform urban planning.
Our Urban Planning Accelerator aims to help cities cut emissions by 25%.
By providing cities with tools, expertise & technical guidance, we can create safer, more sustainable urban environments.
Our Urban Planning Accelerator aims to help cities cut emissions by 25%.
By providing cities with tools, expertise & technical guidance, we can create safer, more sustainable urban environments.
November 12, 2025 at 4:32 PM
📢 @c40cities.bsky.social and @un-habitat.bsky.social are joining forces to transform urban planning.
Our Urban Planning Accelerator aims to help cities cut emissions by 25%.
By providing cities with tools, expertise & technical guidance, we can create safer, more sustainable urban environments.
Our Urban Planning Accelerator aims to help cities cut emissions by 25%.
By providing cities with tools, expertise & technical guidance, we can create safer, more sustainable urban environments.
#Disinformation is a core topic at #COP30. C40's @mark--watts.bsky.social on how mayors are tackling it:
"C40 supports the importance @lulaoficialbluesky.bsky.social has placed on information integrity and tackling disinformation. Cities can play a critical role in making this the ‘COP of Truth’.
"C40 supports the importance @lulaoficialbluesky.bsky.social has placed on information integrity and tackling disinformation. Cities can play a critical role in making this the ‘COP of Truth’.
November 12, 2025 at 3:18 PM
#Disinformation is a core topic at #COP30. C40's @mark--watts.bsky.social on how mayors are tackling it:
"C40 supports the importance @lulaoficialbluesky.bsky.social has placed on information integrity and tackling disinformation. Cities can play a critical role in making this the ‘COP of Truth’.
"C40 supports the importance @lulaoficialbluesky.bsky.social has placed on information integrity and tackling disinformation. Cities can play a critical role in making this the ‘COP of Truth’.
🚨BREAKING: Ana Toni praised city leadership at #COP30
@cop30brazil.bsky.social CEO highlighted the just-announced Yearly Offers of Action: mayors' response plan to the NDC, adaptation & finance gap, and a concrete step to get the world on track to meet the Paris Agreement goals.
@cop30brazil.bsky.social CEO highlighted the just-announced Yearly Offers of Action: mayors' response plan to the NDC, adaptation & finance gap, and a concrete step to get the world on track to meet the Paris Agreement goals.
November 11, 2025 at 6:51 PM
🚨BREAKING: Ana Toni praised city leadership at #COP30
@cop30brazil.bsky.social CEO highlighted the just-announced Yearly Offers of Action: mayors' response plan to the NDC, adaptation & finance gap, and a concrete step to get the world on track to meet the Paris Agreement goals.
@cop30brazil.bsky.social CEO highlighted the just-announced Yearly Offers of Action: mayors' response plan to the NDC, adaptation & finance gap, and a concrete step to get the world on track to meet the Paris Agreement goals.
💥GOOD NEWS: multilevel climate governance milestones announced at #COP30
Brazil🇧🇷 & Germany🇩🇪 will co-chair the CHAMP coalition until 2027, accelerating national & local government collaboration.
@marinasilva.bsky.social @mark--watts.bsky.social @meioambientegov.bsky.social @cop30brazil.bsky.social
Brazil🇧🇷 & Germany🇩🇪 will co-chair the CHAMP coalition until 2027, accelerating national & local government collaboration.
@marinasilva.bsky.social @mark--watts.bsky.social @meioambientegov.bsky.social @cop30brazil.bsky.social
November 11, 2025 at 6:15 PM
💥GOOD NEWS: multilevel climate governance milestones announced at #COP30
Brazil🇧🇷 & Germany🇩🇪 will co-chair the CHAMP coalition until 2027, accelerating national & local government collaboration.
@marinasilva.bsky.social @mark--watts.bsky.social @meioambientegov.bsky.social @cop30brazil.bsky.social
Brazil🇧🇷 & Germany🇩🇪 will co-chair the CHAMP coalition until 2027, accelerating national & local government collaboration.
@marinasilva.bsky.social @mark--watts.bsky.social @meioambientegov.bsky.social @cop30brazil.bsky.social
As #COP30 negotiations call for strengthened climate resilience, cities are already leading the way.
From Lagos to Freetown, bold, local action is already happening. See how C40 Cities and @danishmfa.bsky.social are supporting this vital work 🎥 ⬇️
From Lagos to Freetown, bold, local action is already happening. See how C40 Cities and @danishmfa.bsky.social are supporting this vital work 🎥 ⬇️
November 11, 2025 at 10:00 AM
As #COP30 negotiations call for strengthened climate resilience, cities are already leading the way.
From Lagos to Freetown, bold, local action is already happening. See how C40 Cities and @danishmfa.bsky.social are supporting this vital work 🎥 ⬇️
From Lagos to Freetown, bold, local action is already happening. See how C40 Cities and @danishmfa.bsky.social are supporting this vital work 🎥 ⬇️
Climate action can't wait. At #COP30 in Belém, cities are showing how they're leading the way to protect the people and places we love.
C40 Co-Chairs Mayor of Freetown Yvonne Aki-Sawyerr and Mayor of London Sadiq Khan have joined global mayors in announcing their yearly offers of action at #WMS25.
C40 Co-Chairs Mayor of Freetown Yvonne Aki-Sawyerr and Mayor of London Sadiq Khan have joined global mayors in announcing their yearly offers of action at #WMS25.
November 10, 2025 at 7:09 PM
“COP30 will be the COP of truth.” - @lulaoficialbluesky.bsky.social
Cities know disinformation is one of the key obstacles to climate action - so it's great to see it at the top of #COP30's agenda.
Cities know disinformation is one of the key obstacles to climate action - so it's great to see it at the top of #COP30's agenda.
November 10, 2025 at 5:28 PM
“COP30 will be the COP of truth.” - @lulaoficialbluesky.bsky.social
Cities know disinformation is one of the key obstacles to climate action - so it's great to see it at the top of #COP30's agenda.
Cities know disinformation is one of the key obstacles to climate action - so it's great to see it at the top of #COP30's agenda.
🚨BREAKING: #COP30 President André Corrêa do Lago opens COP highlighting the role of cities 🏙️
"Subnational entities play a central role in implementing the decisions made at COPs. To stop climate change, multilateralism is unquestionably the way forward.”
"Subnational entities play a central role in implementing the decisions made at COPs. To stop climate change, multilateralism is unquestionably the way forward.”
November 10, 2025 at 3:16 PM
🚨BREAKING: #COP30 President André Corrêa do Lago opens COP highlighting the role of cities 🏙️
"Subnational entities play a central role in implementing the decisions made at COPs. To stop climate change, multilateralism is unquestionably the way forward.”
"Subnational entities play a central role in implementing the decisions made at COPs. To stop climate change, multilateralism is unquestionably the way forward.”
As #COP30 opens in Belém, the message from mayors and local leaders is clear: we are ready to help national governments go further and faster. Only together can we meet the challenge of the climate crisis.
@mayoroflondon.bsky.social @eduardopaesoficial.bsky.social @annehidalgo.bsky.social
@mayoroflondon.bsky.social @eduardopaesoficial.bsky.social @annehidalgo.bsky.social
November 10, 2025 at 1:00 PM
As #COP30 opens in Belém, the message from mayors and local leaders is clear: we are ready to help national governments go further and faster. Only together can we meet the challenge of the climate crisis.
@mayoroflondon.bsky.social @eduardopaesoficial.bsky.social @annehidalgo.bsky.social
@mayoroflondon.bsky.social @eduardopaesoficial.bsky.social @annehidalgo.bsky.social
Here is the message to #COP30 from mayors and local leaders from all over the world - and what we need to move from negotiation to action.
November 10, 2025 at 8:32 AM
Here is the message to #COP30 from mayors and local leaders from all over the world - and what we need to move from negotiation to action.
BREAKING: UN Secretary-General António Guterres receives local leaders' statement at #COP30 World Leaders Summit
It's a declaration of support from cities, towns & regions to national govts to advance climate solutions, and a call to strengthen partnerships to close the gap on global climate goals.
It's a declaration of support from cities, towns & regions to national govts to advance climate solutions, and a call to strengthen partnerships to close the gap on global climate goals.
November 8, 2025 at 5:30 PM
BREAKING: UN Secretary-General António Guterres receives local leaders' statement at #COP30 World Leaders Summit
It's a declaration of support from cities, towns & regions to national govts to advance climate solutions, and a call to strengthen partnerships to close the gap on global climate goals.
It's a declaration of support from cities, towns & regions to national govts to advance climate solutions, and a call to strengthen partnerships to close the gap on global climate goals.
Copenhagen is building a cleaner future.
Lord Mayor Lars Weiss has committed that from 2026, all new municipal projects will meet low-emission standards, cutting construction carbon by about 20%.
#WMS25
Lord Mayor Lars Weiss has committed that from 2026, all new municipal projects will meet low-emission standards, cutting construction carbon by about 20%.
#WMS25
November 7, 2025 at 6:00 PM
Copenhagen is building a cleaner future.
Lord Mayor Lars Weiss has committed that from 2026, all new municipal projects will meet low-emission standards, cutting construction carbon by about 20%.
#WMS25
Lord Mayor Lars Weiss has committed that from 2026, all new municipal projects will meet low-emission standards, cutting construction carbon by about 20%.
#WMS25
"Mayors, we get the job done" ⭐
Meet the local leaders taking real climate action, defying populist governments who dismiss and deny science.
Meet the local leaders taking real climate action, defying populist governments who dismiss and deny science.
November 7, 2025 at 4:30 PM
"Mayors, we get the job done" ⭐
Meet the local leaders taking real climate action, defying populist governments who dismiss and deny science.
Meet the local leaders taking real climate action, defying populist governments who dismiss and deny science.
Climate action means restoring nature in our cities.
In Wuhan, the city has committed to restoring Xibeihu Lake and transforming unused spaces into green gardens using sustainable practices like composting, enhancing the urban ecosystem for all.
#WMS25
In Wuhan, the city has committed to restoring Xibeihu Lake and transforming unused spaces into green gardens using sustainable practices like composting, enhancing the urban ecosystem for all.
#WMS25
November 7, 2025 at 4:00 PM
Climate action means restoring nature in our cities.
In Wuhan, the city has committed to restoring Xibeihu Lake and transforming unused spaces into green gardens using sustainable practices like composting, enhancing the urban ecosystem for all.
#WMS25
In Wuhan, the city has committed to restoring Xibeihu Lake and transforming unused spaces into green gardens using sustainable practices like composting, enhancing the urban ecosystem for all.
#WMS25
Building a more inclusive, climate-resilient Tshwane.
Over the next year, Executive Mayor Dr. Nasiphi Moya has pledged to revitalise vulnerable areas through tree planting, clean-up drives and urban greening to build a safer, cooler Tshwane.
#WMS25
Over the next year, Executive Mayor Dr. Nasiphi Moya has pledged to revitalise vulnerable areas through tree planting, clean-up drives and urban greening to build a safer, cooler Tshwane.
#WMS25
November 7, 2025 at 2:00 PM
Building a more inclusive, climate-resilient Tshwane.
Over the next year, Executive Mayor Dr. Nasiphi Moya has pledged to revitalise vulnerable areas through tree planting, clean-up drives and urban greening to build a safer, cooler Tshwane.
#WMS25
Over the next year, Executive Mayor Dr. Nasiphi Moya has pledged to revitalise vulnerable areas through tree planting, clean-up drives and urban greening to build a safer, cooler Tshwane.
#WMS25
Santiago is planting seeds of climate resilience.
Governor of the Metropolitan Region of Santiago de Chile, Claudio Benjamin Orrego, has committed to transforming urban spaces with 33 new pocket forests, bringing natural cooling and cleaner air to neighbourhoods that need it most.
#WMS25
Governor of the Metropolitan Region of Santiago de Chile, Claudio Benjamin Orrego, has committed to transforming urban spaces with 33 new pocket forests, bringing natural cooling and cleaner air to neighbourhoods that need it most.
#WMS25
November 7, 2025 at 12:00 PM
Santiago is planting seeds of climate resilience.
Governor of the Metropolitan Region of Santiago de Chile, Claudio Benjamin Orrego, has committed to transforming urban spaces with 33 new pocket forests, bringing natural cooling and cleaner air to neighbourhoods that need it most.
#WMS25
Governor of the Metropolitan Region of Santiago de Chile, Claudio Benjamin Orrego, has committed to transforming urban spaces with 33 new pocket forests, bringing natural cooling and cleaner air to neighbourhoods that need it most.
#WMS25