Climate Changed

Hopes Dim for Broad Deal on Global Carbon Market at UN Talks

Envoys are working to create a mechanism to spur hundreds of billions of dollars of aid for cutting greenhouse gases.

Visitors walk by the logo of the UN Climate Change Conference COP25 in Madrid, on Dec. 2.Photographer: GABRIEL BOUYS/AFP
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For the second year in a row, a rift between industrial and developing nations about how to use carbon markets risks watering down a deal that could unlock hundreds of billions of dollars in aid for climate-related projects.

Envoys from almost 200 nations entered their final day of talks at a United Nations COP25 event in Madrid were still debating details of the plan. That raised the prospect that they will leave without agreeing on enough of a framework to revive a global market once worth more than $138 billion.