A network of city mayors delivering urgent climate solutions. Protecting the people and places we love. 🌳🌍🌆💚 http://www.c40.org/https://bsky.app/profile/c40cities.bsky.socialhttps://bsky.app/profile/c40cities.bsky.social/post/3muyvect7pk2v"How do you protect millions of people when extreme heat is no longer an exceptional event, but an increasingly familiar part of summer?" The mayors of Milan, Paris, and Phoenix answer how cities are sharing strategies and taking action in @theguardian.com: https://www.theguardian.com/commentisfree/2026/sep/07/heat-climate-crisis-paris-milan-phoenix https://www.theguardian.com/commentisfree/2026/sep/07/heat-climate-crisis-paris-milan-phoenix@theguardian.com08 Sep 2026 11:13 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3muyvect7pk2vhttps://bsky.app/profile/c40cities.bsky.social/post/3murcjcdoxe2mThe future of the Amazon is being shaped in its cities. The Amazon is home to millions of people. We’re working with 11 Amazonian cities to strengthen climate action - from cleaner mobility to better waste management.05 Sep 2026 10:48 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3murcjcdoxe2mhttps://bsky.app/profile/c40cities.bsky.social/post/3mumn3smny227How can cities ensure everyone has safe, affordable housing without putting unsustainable pressure on the planet? The Journal of City Climate Policy and Economy is seeking research and policy guidelines for our Dec 2027 housing issue. Deadline for abstracts is 30 Oct 2026: https://c40.me/4yidYRd 03 Sep 2026 14:14 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mumn3smny227https://bsky.app/profile/c40cities.bsky.social/post/3mumjy23fbs2hCatastrophic floods, dangerous heatwaves, deadly wildfires. This year, the world has seen extreme weather that has affected millions of people, claimed lives and devastated communities. The climate crisis is already here. We can't deny it. We must act.03 Sep 2026 13:18 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mumjy23fbs2hhttps://bsky.app/profile/c40cities.bsky.social/post/3mtk3cd5pej26How can cities keep critical services running during conflict and ensure communities remain protected? In this episode of Cities 1.5, host David Miller and Oleksandyr Senkevych, Mayor of Mykolaiv, discuss decentralising energy, using real-time data, and building resilience: lnk.to/HotTakes620 Aug 2026 20:25 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mtk3cd5pej26https://bsky.app/profile/c40cities.bsky.social/post/3mtgpdxycic2nKinda chic to breathe clean air ⬇️ [contains quote post or other embedded content]19 Aug 2026 12:13 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mtgpdxycic2nhttps://bsky.app/profile/c40cities.bsky.social/post/3msxbalxbk22pQ: How to build a climate-resilient city? A: Include young people. #YouthDay202613 Aug 2026 08:50 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3msxbalxbk22phttps://bsky.app/profile/c40cities.bsky.social/post/3msuoh4xt4s2a“In June, Chicago joined 40 cities to launch the Global Urban Data Centres Pact to ensure future expansion delivers cleaner energy & lower costs. @mayorofchicago.bsky.social is turning the principles of the Pact into concrete local action.” - C40 Cities North America Director Kate Johnson. [contains quote post or other embedded content]12 Aug 2026 08:09 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3msuoh4xt4s2ahttps://bsky.app/profile/c40cities.bsky.social/post/3mss5wylolk2n“The past 11 years have been the 11 hottest ever recorded. The climate emergency is here & no one can say they didn’t see it coming.” ⁃ @mayoroflondon.bsky.social on climate denial, preparing for a hotter future and embracing net zero like never before. https://www.theguardian.com/commentisfree/2026/aug/08/burning-summer-climate-denial-green-policies-sadiq-khan11 Aug 2026 08:08 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mss5wylolk2nhttps://bsky.app/profile/c40cities.bsky.social/post/3msgddje3yg2lHow can we beat disinformation? In this Cities 1.5, Mayor Senkevich of Mykolaiv joins host David Miller to explore why communication is key and how the new City Climate Facts initiative is helping cities tackle fake news with facts: lnk.to/HotTakes5 06 Aug 2026 15:13 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3msgddje3yg2lhttps://bsky.app/profile/c40cities.bsky.social/post/3msbbvfjvcc2oSince the adoption of generative AI in 2022 and 2023, global spending on data centres has surged. As energy demands increase, so does the need for greater oversight. City leaders have an opportunity to bridge this policy gap, protecting both local resources and communities.04 Aug 2026 15:03 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3msbbvfjvcc2ohttps://bsky.app/profile/c40cities.bsky.social/post/3mrrxsdqwcb2nClimate resilience starts long before a disaster strikes. Cooler streets, flood-ready neighbourhoods, reliable public transport, prepared communities – these are the building blocks that set the foundation for a climate-resilient city. 29 Jul 2026 12:53 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mrrxsdqwcb2nhttps://bsky.app/profile/c40cities.bsky.social/post/3mrf636ro432gData saves lives. Around the world, cities are combining community insights, technology and urban design to protect the people and places we love. 👉 24 Jul 2026 10:41 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mrf636ro432ghttps://bsky.app/profile/c40cities.bsky.social/post/3mrdbtkliok2qAI is booming – but who's making sure cities and people don't bear the cost? 41 mayors have a plan. In this Cities 1.5 episode, hear from 2 mayors co-leading the new Global Urban Data Centres Pact, and learn why they believe cities must shape the future of data centres: https://lnk.to/HotTakes4 23 Jul 2026 16:43 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mrdbtkliok2qhttps://bsky.app/profile/c40cities.bsky.social/post/3mqjtt6lcce2bClimate projects can solve more than just one problem. Melbourne’s work to transform the mighty Birrarung (aka the Yarra River) is improving resilience, restoring nature, and creating better public spaces all at once. C40's Vice Chair and Lord Mayor of Melbourne Nick Reece describes its impact.13 Jul 2026 13:55 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mqjtt6lcce2bhttps://bsky.app/profile/c40cities.bsky.social/post/3mq2gdkpi5d27Describe your city’s climate action plan in 30 seconds? Easier said than done. With so much underway, C40 Co-Chair and Mayor of Freetown Yvonne Aki-Sawyerr OBE picked just one climate action to highlight, and talks us through it in under 30 seconds. 🏆 07 Jul 2026 10:44 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mq2gdkpi5d27https://bsky.app/profile/c40cities.bsky.social/post/3mpq6xlsybk2dMayors are coming together to take action on one of the fastest-growing challenges facing our cities.03 Jul 2026 09:05 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mpq6xlsybk2dhttps://bsky.app/profile/c40cities.bsky.social/post/3mpo2a7jpc22oOur cities are the G.O.A.T (greenest of all time) 💚🌳⚽ 02 Jul 2026 12:35 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mpo2a7jpc22ohttps://bsky.app/profile/c40cities.bsky.social/post/3mpl6ujixbf2w“For how many years have we seen C40 Cities really take the lead on very difficult issues when national governments have not been able to do so.” - Christiana Figueres @outrageoptimism.bsky.social reflects on #LCAW and how extreme heat shaped the week's discussions. 🎧 https://c40.me/4eRPAhw 01 Jul 2026 09:20 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mpl6ujixbf2whttps://bsky.app/profile/c40cities.bsky.social/post/3mpjajcbfa42nRidiculous climate conspiracies? These mayors have heard them all, and the facts tell a different story. That's why C40 Cities has launched City Climate Facts to help cities tackle climate disinformation: https://c40.me/4xXA3oO 30 Jun 2026 14:44 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mpjajcbfa42nhttps://bsky.app/profile/c40cities.bsky.social/post/3mp56fe3cdn2rcities 🤝 businesses Energy security, affordability and resilience continue to dominate local agendas. At #LCAW26 city and business leaders, including mayors of Melbourne, Phoenix, Renca and Cluj-Napoca, discussed how working together can unlock solutions and reduce emissions.25 Jun 2026 19:35 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mp56fe3cdn2rhttps://bsky.app/profile/c40cities.bsky.social/post/3mp4zlmfyyp23We need urban planning to make cities climate-safe. At #LCAW26 city leaders, experts, Community Jameel & @genslerdesign.bsky.social discussed how planning, data & nature can strengthen resilience. The C40 & @un-habitat.bsky.social Accelerator stood out as a model for turning ambition into delivery.25 Jun 2026 18:09 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mp4zlmfyyp23https://bsky.app/profile/c40cities.bsky.social/post/3mp4v5xmzlc2g"Nicky understood that climate action must be rooted in solutions that work for people." Yesterday we honoured the legacy of Nicky Gavron, former Deputy Mayor of London and pioneering environmental campaigner. #LCAW2625 Jun 2026 16:49 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mp4v5xmzlc2ghttps://bsky.app/profile/c40cities.bsky.social/post/3mp4po5k4fc2gClimate action fit for a King 💚👑🌍 His Majesty King Charles III met with C40 Cities Co-Chair Mayor of Freetown Yvonne Aki-Sawyerr at a reception focused on accelerating action on super-pollutants ahead of #COP31. #LCAW2625 Jun 2026 15:11 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mp4po5k4fc2ghttps://bsky.app/profile/c40cities.bsky.social/post/3mp2anzufv22uHousing and climate action are often presented as competing priorities. Today, C40 Cities was joined by Holcim Foundation for Sustainable Construction, Urban Partners, and Arup to highlight how cities can expand housing supply while advancing climate goals.24 Jun 2026 15:37 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mp2anzufv22uhttps://bsky.app/profile/c40cities.bsky.social/post/3mp22j5335c2uNational climate goals can only be achieved when cities, states, and regions are fully empowered to act. Leaders gathered at #LCAW today to help shape the future direction of the Coalition for High Ambition Multilevel Partnerships (CHAMP).24 Jun 2026 13:47 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mp22j5335c2uhttps://bsky.app/profile/c40cities.bsky.social/post/3mozuk4b7jc25From Melbourne to Phoenix, mayors are joining forces to help shape the future of data centre growth. The new Global Urban Data Centres Pact unites 41 cities behind a shared vision for sustainable data centre development that puts people first. Learn more: c40.me/urbandatacentres 24 Jun 2026 12:00 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mozuk4b7jc25https://bsky.app/profile/c40cities.bsky.social/post/3mozhsh4nwk2nDay 2 of London Climate Action Week was all about the systems and solutions needed to power a growing urban world while keeping climate goals within reach. Watch for a quick look back at the day. 📽️ #LCAW202624 Jun 2026 08:12 +0000at://did:plc:xgseqz7uh6xwbfk24l7bas4d/app.bsky.feed.post/3mozhsh4nwk2n