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/
Reposted by C40 Cities
We must end the fossil fuel era.
UN Secretary-General, António Guterres, knows this better than anyone. I want to thank him for his steadfast climate leadership and his commitment to phasing out fossil fuels. A pleasure to meet today together with C40 Cities Co-Chair, Mayor of London Sadiq Khan.
UN Secretary-General, António Guterres, knows this better than anyone. I want to thank him for his steadfast climate leadership and his commitment to phasing out fossil fuels. A pleasure to meet today together with C40 Cities Co-Chair, Mayor of London Sadiq Khan.
January 16, 2026 at 4:10 PM
We must end the fossil fuel era.
UN Secretary-General, António Guterres, knows this better than anyone. I want to thank him for his steadfast climate leadership and his commitment to phasing out fossil fuels. A pleasure to meet today together with C40 Cities Co-Chair, Mayor of London Sadiq Khan.
UN Secretary-General, António Guterres, knows this better than anyone. I want to thank him for his steadfast climate leadership and his commitment to phasing out fossil fuels. A pleasure to meet today together with C40 Cities Co-Chair, Mayor of London Sadiq Khan.
Can we design a city that benefits everyone?
S6E1 of Cities 1.5 kicks off with the mayors of Milan, Ekurhuleni, and Rotterdam & Leonora Grcheva from @doughnuteconomics.bsky.social discussing urban economies for a climate-first future: https://lnk.to/S6E1
S6E1 of Cities 1.5 kicks off with the mayors of Milan, Ekurhuleni, and Rotterdam & Leonora Grcheva from @doughnuteconomics.bsky.social discussing urban economies for a climate-first future: https://lnk.to/S6E1
January 14, 2026 at 10:35 AM
Can we design a city that benefits everyone?
S6E1 of Cities 1.5 kicks off with the mayors of Milan, Ekurhuleni, and Rotterdam & Leonora Grcheva from @doughnuteconomics.bsky.social discussing urban economies for a climate-first future: https://lnk.to/S6E1
S6E1 of Cities 1.5 kicks off with the mayors of Milan, Ekurhuleni, and Rotterdam & Leonora Grcheva from @doughnuteconomics.bsky.social discussing urban economies for a climate-first future: https://lnk.to/S6E1
Hands up if you want even more good climate news in 2026 🙋
January 12, 2026 at 11:44 AM
Hands up if you want even more good climate news in 2026 🙋
🚫 A global crisis requires global courage - not a federal retreat.
President Trump's decision to withdraw from the UNFCCC and 65 international agreements is more than a policy shift; it is a reckless abandonment of global responsibilities that puts every American at risk.
President Trump's decision to withdraw from the UNFCCC and 65 international agreements is more than a policy shift; it is a reckless abandonment of global responsibilities that puts every American at risk.
January 9, 2026 at 5:01 PM
🚫 A global crisis requires global courage - not a federal retreat.
President Trump's decision to withdraw from the UNFCCC and 65 international agreements is more than a policy shift; it is a reckless abandonment of global responsibilities that puts every American at risk.
President Trump's decision to withdraw from the UNFCCC and 65 international agreements is more than a policy shift; it is a reckless abandonment of global responsibilities that puts every American at risk.
Manifesting a greener, fairer 2026 for all ✨
January 5, 2026 at 1:00 PM
Manifesting a greener, fairer 2026 for all ✨
Coming soon: the new series of Cities 1.5 podcast.
From discussing the urban transformations we need, to tackling disinformation - subscribe to the Cities 1.5 podcast today to not miss an episode.
https://lnk.to/CitiesS6Trailer
From discussing the urban transformations we need, to tackling disinformation - subscribe to the Cities 1.5 podcast today to not miss an episode.
https://lnk.to/CitiesS6Trailer
Cities 1.5
Season 6: Trailer
lnk.to
December 30, 2025 at 5:50 PM
Coming soon: the new series of Cities 1.5 podcast.
From discussing the urban transformations we need, to tackling disinformation - subscribe to the Cities 1.5 podcast today to not miss an episode.
https://lnk.to/CitiesS6Trailer
From discussing the urban transformations we need, to tackling disinformation - subscribe to the Cities 1.5 podcast today to not miss an episode.
https://lnk.to/CitiesS6Trailer
At the World Mayors Summit, mayors shared their innovative solutions to fight the climate crisis and showed what’s possible through collaboration. ✨ 💫
@london.gov.uk @nicholasreece.bsky.social
@london.gov.uk @nicholasreece.bsky.social
December 29, 2025 at 5:03 PM
At the World Mayors Summit, mayors shared their innovative solutions to fight the climate crisis and showed what’s possible through collaboration. ✨ 💫
@london.gov.uk @nicholasreece.bsky.social
@london.gov.uk @nicholasreece.bsky.social
'Tis the season to watch some iconic films 🎄
December 24, 2025 at 10:22 AM
'Tis the season to watch some iconic films 🎄
300 mayors. 50 sessions. 1 shared purpose. To protect the people and places we love.
At the World Mayors Summit in Rio, mayors shared how they are delivering results in their cities.
At the World Mayors Summit in Rio, mayors shared how they are delivering results in their cities.
December 22, 2025 at 4:09 PM
300 mayors. 50 sessions. 1 shared purpose. To protect the people and places we love.
At the World Mayors Summit in Rio, mayors shared how they are delivering results in their cities.
At the World Mayors Summit in Rio, mayors shared how they are delivering results in their cities.
NEW: Cities 1.5 Podcast’s Hot Takes - Dispatches from the Frontlines of the Climate Crisis.
Cities 1.5’s first Hot Take focuses on a major move in Canada’s energy future and what it means for climate, cities, and the promises made to hold fossil fuel giants accountable. lnk.to/HotTakes1
Cities 1.5’s first Hot Take focuses on a major move in Canada’s energy future and what it means for climate, cities, and the promises made to hold fossil fuel giants accountable. lnk.to/HotTakes1
December 18, 2025 at 2:10 PM
NEW: Cities 1.5 Podcast’s Hot Takes - Dispatches from the Frontlines of the Climate Crisis.
Cities 1.5’s first Hot Take focuses on a major move in Canada’s energy future and what it means for climate, cities, and the promises made to hold fossil fuel giants accountable. lnk.to/HotTakes1
Cities 1.5’s first Hot Take focuses on a major move in Canada’s energy future and what it means for climate, cities, and the promises made to hold fossil fuel giants accountable. lnk.to/HotTakes1
The latest Journal of City Climate Policy and Economy issue is here. Climate-neutral construction, just transition strategies, new finance models for urban resilience: see what cities are already putting into practice.
utppublishing.com/toc/jccpe/4/3
utppublishing.com/toc/jccpe/4/3
Contents | Journal of City Climate Policy and Economy 4, 3
Background: Climate adaptation strategies in cities increasingly risk reinforcing housing inequalities through climate gentrification, that is, the displacement of vulnerable residents driven by both climate impacts and adaptation measures that raise the ...
utppublishing.com
December 15, 2025 at 2:03 PM
The latest Journal of City Climate Policy and Economy issue is here. Climate-neutral construction, just transition strategies, new finance models for urban resilience: see what cities are already putting into practice.
utppublishing.com/toc/jccpe/4/3
utppublishing.com/toc/jccpe/4/3
From London hitting clean air targets nearly 200 years early to Bangkok strengthening its targets, here are our 5 top moments from 2025, where cities around the world showed how they are delivering cleaner air and safer futures.
December 12, 2025 at 4:21 PM
From London hitting clean air targets nearly 200 years early to Bangkok strengthening its targets, here are our 5 top moments from 2025, where cities around the world showed how they are delivering cleaner air and safer futures.
Mayors are moving past talk and delivering real progress by committing to Yearly Offers of Action.
Our Co-Chairs are joining other city leaders to turn climate pledges into results.
@london.gov.uk
Our Co-Chairs are joining other city leaders to turn climate pledges into results.
@london.gov.uk
December 11, 2025 at 7:15 PM
Mayors are moving past talk and delivering real progress by committing to Yearly Offers of Action.
Our Co-Chairs are joining other city leaders to turn climate pledges into results.
@london.gov.uk
Our Co-Chairs are joining other city leaders to turn climate pledges into results.
@london.gov.uk
The year of the mayor 🎧
December 4, 2025 at 12:43 PM
The year of the mayor 🎧
To continue driving climate action, cities need more than applause. While we saw progress in Belém, local leaders still lack the recognition, tools and direct finance to scale their impact.
🎧 Tune in to the Cities 1.5 Special for the definitive city-level analysis of COP30 outcomes. lnk.to/Summit2
🎧 Tune in to the Cities 1.5 Special for the definitive city-level analysis of COP30 outcomes. lnk.to/Summit2
December 3, 2025 at 1:25 PM
To continue driving climate action, cities need more than applause. While we saw progress in Belém, local leaders still lack the recognition, tools and direct finance to scale their impact.
🎧 Tune in to the Cities 1.5 Special for the definitive city-level analysis of COP30 outcomes. lnk.to/Summit2
🎧 Tune in to the Cities 1.5 Special for the definitive city-level analysis of COP30 outcomes. lnk.to/Summit2
“This hurricane season made one thing clear: resilience has become a core part of public health." - Dr Quinn Adams on the defining health challenges of the post-hurricane era. More insights and reflections via the C40 Centre's latest Substack: https://thecentre.substack.com/p/hurricanes-are-changing
Hurricanes Are Changing
Are we?
thecentre.substack.com
December 1, 2025 at 4:09 PM
“This hurricane season made one thing clear: resilience has become a core part of public health." - Dr Quinn Adams on the defining health challenges of the post-hurricane era. More insights and reflections via the C40 Centre's latest Substack: https://thecentre.substack.com/p/hurricanes-are-changing
#COP30 fell short - and missed the opportunity to truly shift from negotiation to implementation.
But mayors will not slow down. We're delivering ambitious, inclusive climate action now. The world needs to follow the pace of cities.
But mayors will not slow down. We're delivering ambitious, inclusive climate action now. The world needs to follow the pace of cities.
November 25, 2025 at 4:11 PM
#COP30 fell short - and missed the opportunity to truly shift from negotiation to implementation.
But mayors will not slow down. We're delivering ambitious, inclusive climate action now. The world needs to follow the pace of cities.
But mayors will not slow down. We're delivering ambitious, inclusive climate action now. The world needs to follow the pace of cities.
From cooling centres in Phoenix to tree planting in Quezon City, mayors are fighting extreme heat.
The new C40 Cool Cities Accelerator is scaling these life-saving actions, helping cities worldwide protect residents and build a more liveable urban future.
The new C40 Cool Cities Accelerator is scaling these life-saving actions, helping cities worldwide protect residents and build a more liveable urban future.
November 25, 2025 at 10:02 AM
From cooling centres in Phoenix to tree planting in Quezon City, mayors are fighting extreme heat.
The new C40 Cool Cities Accelerator is scaling these life-saving actions, helping cities worldwide protect residents and build a more liveable urban future.
The new C40 Cool Cities Accelerator is scaling these life-saving actions, helping cities worldwide protect residents and build a more liveable urban future.
Reposted by C40 Cities
My comment on the #COP30 outcome:
Multilateralism needed a boost in Belém, and instead it got a bandage. The COP process needs to take a long, hard look at itself.
Multilateralism needed a boost in Belém, and instead it got a bandage. The COP process needs to take a long, hard look at itself.
November 22, 2025 at 7:20 PM
My comment on the #COP30 outcome:
Multilateralism needed a boost in Belém, and instead it got a bandage. The COP process needs to take a long, hard look at itself.
Multilateralism needed a boost in Belém, and instead it got a bandage. The COP process needs to take a long, hard look at itself.
As we wait for the official outcome of #COP30, here’s a time capsule of its last day: the outrage, the optimism, the urgency, and the sheer human effort that goes into trying to land a deal.
The latest episode of @outrageoptimism.bsky.social featuring C40’s Eric Garcetti & @mark--watts.bsky.social:
The latest episode of @outrageoptimism.bsky.social featuring C40’s Eric Garcetti & @mark--watts.bsky.social:
Inside COP: Friday Night in Belém - uncertainty in the Blue Zone
This episode is a time capsule that captures the feeling of a COP Friday: the confusion, the determination, the fear of losing ambition, and the belief, still very much alive, that progress is possibl...
www.outrageandoptimism.org
November 22, 2025 at 10:04 AM
As we wait for the official outcome of #COP30, here’s a time capsule of its last day: the outrage, the optimism, the urgency, and the sheer human effort that goes into trying to land a deal.
The latest episode of @outrageoptimism.bsky.social featuring C40’s Eric Garcetti & @mark--watts.bsky.social:
The latest episode of @outrageoptimism.bsky.social featuring C40’s Eric Garcetti & @mark--watts.bsky.social:
”On the brink of collapse, #COP30 needs cities to survive”
Former LA Mayor Eric Garcetti warns a non-consensus COP30 would be a "worst message at the most urgent moment."
The solution is to bring cities to the table: an “easy win” to prevent the conference from sinking.
Former LA Mayor Eric Garcetti warns a non-consensus COP30 would be a "worst message at the most urgent moment."
The solution is to bring cities to the table: an “easy win” to prevent the conference from sinking.
November 21, 2025 at 6:54 PM
”On the brink of collapse, #COP30 needs cities to survive”
Former LA Mayor Eric Garcetti warns a non-consensus COP30 would be a "worst message at the most urgent moment."
The solution is to bring cities to the table: an “easy win” to prevent the conference from sinking.
Former LA Mayor Eric Garcetti warns a non-consensus COP30 would be a "worst message at the most urgent moment."
The solution is to bring cities to the table: an “easy win” to prevent the conference from sinking.
Our reaction to the disappointing draft outcome of #COP30 is the lead story in Brazil’s biggest paper today.
A COP30 declaration without any proposal to phase out fossil fuels would be a huge wasted opportunity - and could reduce the global mutirão to ashes.
A COP30 declaration without any proposal to phase out fossil fuels would be a huge wasted opportunity - and could reduce the global mutirão to ashes.
November 21, 2025 at 2:37 PM
Our reaction to the disappointing draft outcome of #COP30 is the lead story in Brazil’s biggest paper today.
A COP30 declaration without any proposal to phase out fossil fuels would be a huge wasted opportunity - and could reduce the global mutirão to ashes.
A COP30 declaration without any proposal to phase out fossil fuels would be a huge wasted opportunity - and could reduce the global mutirão to ashes.
🚨BREAKING: historic scenes at #COP30 as Colombia launches the Belém Declaration on fossil fuels, together with a first international conference on a just transition away from fossil fuels - and invites cities and subnationals.
November 21, 2025 at 1:18 PM
🚨BREAKING: historic scenes at #COP30 as Colombia launches the Belém Declaration on fossil fuels, together with a first international conference on a just transition away from fossil fuels - and invites cities and subnationals.
‼️ #COP30 could miss a historic opportunity if it does not formally include cities and subnationals in its outcome text.
Caterina Sarfatti, Head of the C40 Cities delegation at #COP30:
“This will not be the COP of implementation without highlighting the implementers."
Caterina Sarfatti, Head of the C40 Cities delegation at #COP30:
“This will not be the COP of implementation without highlighting the implementers."
Líderes do C40 propõem participação subnacional na carta final da COP30
Líderes do C40 propõem participação subnacional na carta final da COP30
www.cnnbrasil.com.br
November 21, 2025 at 12:36 PM