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Signage outside the Parque da Cidade, the main venue for the COP30 summit, in Belém. — Signage outside the Parque da Cidade, the main venue for the COP30 summit, in Belém.
Photographer: Dado Galdeiri/Bloomberg

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By John Ainger, Daniel Carvalho, Alfred Cang, and Akshat Rathi

November 11, 2025 at 9:00 AM UTC

Leia em português

Delegates from nearly 200 countries have gathered in Belém in the Brazilian Amazon for the United Nations’ COP30 climate conference, running through Nov. 21.