An activist in Belem, Brazil, bares his muddy palms in protest of COP 30’s major sponsor Vale — on the 10th anniversary of the deadly Mariana dam disaster linked to the mining company. The sign reads: "Vale kills rivers, kills fish, kills people.".Photo: AP Photo/Paulo Santos/Alamy

Sign of the Times

In Belém, an activist marks the Mariana dam anniversary by protesting COP30 sponsor Vale.

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