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Mayors pledge coordinated climate action ahead of UN conference in Brazil

The coalition aims to reduce urban heat impacts by expanding tree cover and improving infrastructure, with cities cutting emissions five times faster than the global average, organizers said.

  • On Monday, 300 mayors gathered in Rio de Janeiro to launch the Cool Cities Accelerator, a global coalition led by the C40 network of mayors to tackle rising heat.
  • C40 leaders cited rising hospitalizations and crop losses as analyses link extreme heat to illness, death, and system strain, with scientists saying 4 billion people experienced extra heat from May 2024 to May 2025.
  • Mayors committed to practical steps such as planting trees and shade structures, cool-surface technology pilots, and heat-relief training for first responders, backed by ClimateWorks Foundation, Robert Wood Johnson Foundation, Z Zurich Foundation, Danish Ministry of Foreign Affairs, and The Rockefeller Foundation's just under $1,000,000 funding.
  • C40 members noted cities have cut emissions five times faster than the global average, with London Mayor Sadiq Khan and Phoenix Mayor Kate Gallego saying cities fill gaps left by national governments.
  • Just days before COP30 , organizers reported 132 countries had secured accommodation, while 49 nations still searched amid hotel shortages.
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Mayors pledge coordinated climate action ahead of UN conference in Brazil

Three hundred mayors have gathered in Rio de Janeiro to pledge coordinated climate action in their cities.

·United States
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Further to its leading role as a national institution with consultative status with the Economic and Social Council of the United Nations (ECOSOC), accredited to the United Nations Framework Convention on Climate Change (UNFCCC); and confirming the position of Saudi experts and national best practices emanating from the Kingdom ' s Vision 2030 in supporting global efforts towards sustainability and green transformation, the Saudi Green Buil…

·Mecca, Saudi Arabia
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At the C40 World Summit of Mayors, which opened this Monday in Rio de Janeiro, the Secretary-General of the United Nations, António Guterres, called for more ambitious and coordinated climate action, stressing that "continuing to invest in fossil fuels is a dead end." With COP30 approaching, the UN leader insisted that it must […]

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Winnipeg Free Press broke the news in Winnipeg, Canada on Monday, November 3, 2025.
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