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/
Half-time analysis at #COP30 ⚽️🕑🌎
Take a look at our mid-point assessment of city and subnational action and asks in Belém.
c40.org/news/halftim...
Take a look at our mid-point assessment of city and subnational action and asks in Belém.
c40.org/news/halftim...
Halftime at COP30 - C40 Cities
As we head into the second week of COP30, negotiations are intensifying, with increasing calls for an ambitious outcome that...
c40.org
November 16, 2025 at 3:25 PM
Half-time analysis at #COP30 ⚽️🕑🌎
Take a look at our mid-point assessment of city and subnational action and asks in Belém.
c40.org/news/halftim...
Take a look at our mid-point assessment of city and subnational action and asks in Belém.
c40.org/news/halftim...
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/
Reposted by C40 Cities
📣 At #COP30, the ICCT is partnering with @c40cities.bsky.social and the Climate and Clean Air Coalition (CCAC) to accelerate electrification of construction equipment globally. Construction equipment accounts for 40% of non-road emissions—a significant opportunity!
👉 theicct.org/pr-global-pa...
👉 theicct.org/pr-global-pa...
November 14, 2025 at 8:15 PM
📣 At #COP30, the ICCT is partnering with @c40cities.bsky.social and the Climate and Clean Air Coalition (CCAC) to accelerate electrification of construction equipment globally. Construction equipment accounts for 40% of non-road emissions—a significant opportunity!
👉 theicct.org/pr-global-pa...
👉 theicct.org/pr-global-pa...
🚨 BREAKING: C40 Cities calls for #COP30 to raise ambition and progress plan to phase out fossil fuels ⚡
City leaders joined a coalition offering support for a fossil fuel transition roadmap. Cities are ready to contribute not only as partners in planning, but as essential drivers of delivery.
City leaders joined a coalition offering support for a fossil fuel transition roadmap. Cities are ready to contribute not only as partners in planning, but as essential drivers of delivery.
November 14, 2025 at 6:51 PM
🚨 BREAKING: C40 Cities calls for #COP30 to raise ambition and progress plan to phase out fossil fuels ⚡
City leaders joined a coalition offering support for a fossil fuel transition roadmap. Cities are ready to contribute not only as partners in planning, but as essential drivers of delivery.
City leaders joined a coalition offering support for a fossil fuel transition roadmap. Cities are ready to contribute not only as partners in planning, but as essential drivers of delivery.
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.
Reposted by C40 Cities
This week, I’m at @cop30brazil.bsky.social in Belém where cities are backing the COP30 Presidency's call in moving from negotiation to implementation.
Here’s what to expect from C40 Cities over the next two weeks ⬇️
Here’s what to expect from C40 Cities over the next two weeks ⬇️
November 10, 2025 at 1:03 PM
This week, I’m at @cop30brazil.bsky.social in Belém where cities are backing the COP30 Presidency's call in moving from negotiation to implementation.
Here’s what to expect from C40 Cities over the next two weeks ⬇️
Here’s what to expect from C40 Cities over the next two weeks ⬇️
🚨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.
⚡ Essential reading before #COP30:
There has never been a more urgent argument for multilevel cooperation. Latest UN report confirms the world is off-track to meet the Paris Agreement goals.
Progress needs cities, states & regions as full partners.
Read the city analysis of NDCs 👇
There has never been a more urgent argument for multilevel cooperation. Latest UN report confirms the world is off-track to meet the Paris Agreement goals.
Progress needs cities, states & regions as full partners.
Read the city analysis of NDCs 👇
UN review of national climate plans sees greater support for local action role - C40 Cities
Ahead of COP30 in Belém, Brazil, a United Nations analysis of the latest national climate plans has a clear message:...
www.c40.org
November 9, 2025 at 5:39 PM
⚡ Essential reading before #COP30:
There has never been a more urgent argument for multilevel cooperation. Latest UN report confirms the world is off-track to meet the Paris Agreement goals.
Progress needs cities, states & regions as full partners.
Read the city analysis of NDCs 👇
There has never been a more urgent argument for multilevel cooperation. Latest UN report confirms the world is off-track to meet the Paris Agreement goals.
Progress needs cities, states & regions as full partners.
Read the city analysis of NDCs 👇
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.
While the US federal government is trying to block global climate action, cities are stepping in to lead.
At #WMS25, mayors came together to stop climate breakdown. Hear what it was like on the ground in the Cities 1.5 World Mayors Summit Special dropping on 18 Nov. https://lnk.to/S6Trailer
At #WMS25, mayors came together to stop climate breakdown. Hear what it was like on the ground in the Cities 1.5 World Mayors Summit Special dropping on 18 Nov. https://lnk.to/S6Trailer
Cities 1.5 World Mayors Summit Special
Mayors came together to lead the fight to stop climate breakdown.
lnk.to
November 8, 2025 at 4:12 PM
While the US federal government is trying to block global climate action, cities are stepping in to lead.
At #WMS25, mayors came together to stop climate breakdown. Hear what it was like on the ground in the Cities 1.5 World Mayors Summit Special dropping on 18 Nov. https://lnk.to/S6Trailer
At #WMS25, mayors came together to stop climate breakdown. Hear what it was like on the ground in the Cities 1.5 World Mayors Summit Special dropping on 18 Nov. https://lnk.to/S6Trailer
Reposted by C40 Cities
In the first #InsideCOP episode from Brazil, we go inside the #COP30 Local Leaders Forum in Rio de Janeiro - where mayors, governors, and regional leaders are driving climate progress from the ground up. tr.ee/InsideCOP
November 7, 2025 at 9:11 AM
In the first #InsideCOP episode from Brazil, we go inside the #COP30 Local Leaders Forum in Rio de Janeiro - where mayors, governors, and regional leaders are driving climate progress from the ground up. tr.ee/InsideCOP
During #WMS25 @outrageoptimism.bsky.social spoke with mayors about how they are turning ambition into action.
Listen to interviews with the mayors of Paris, Freetown, and Portland about how cities are cutting emissions, investing in resilience, and driving progress.
Listen to interviews with the mayors of Paris, Freetown, and Portland about how cities are cutting emissions, investing in resilience, and driving progress.
Inside COP: The Power of Cities - from the Local Leaders Forum
In the first Inside COP episode from Brazil, we go inside the COP30 Local Leaders Forum in Rio de Janeiro - where mayors, governors, and regional leaders are driving climate progress from the ground u...
www.outrageandoptimism.org
November 8, 2025 at 11:13 AM
During #WMS25 @outrageoptimism.bsky.social spoke with mayors about how they are turning ambition into action.
Listen to interviews with the mayors of Paris, Freetown, and Portland about how cities are cutting emissions, investing in resilience, and driving progress.
Listen to interviews with the mayors of Paris, Freetown, and Portland about how cities are cutting emissions, investing in resilience, and driving progress.
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