U.N. climate negotiations were expected to begin Monday at a meeting on the edge of the Brazilian Amazon, with leaders pushing for urgency, cooperation and acceleration after more than 30 years fighting to curb global warming by drastically reducing the carbon pollution that causes it.

André Corrêa do Lago, president of this year's conference, known as COP30, emphasized that negotiators engage in “mutirão,” a Brazilian word derived from an Indigenous word that refers to a group uniting to work on a shared task.

On Monday, outgoing COP29 President, Mukhtar Babayev, reiterated that donors must "deliver in full." "The changing world is no excuse for backtracking," he said.

Meanwhile, Brazilian President Luiz Inácio Lula da Silva, warned that climate change could push warming could push millions of people into hunger and poverty.

"If the men who make war were here at this COP, they would realize that it’s much cheaper to put $1.3 trillion toward solving the climate crisis than to spend $2.7 trillion on war, as they did last year," Lula said.

Complicating the calls for togetherness is the United States.

The Trump administration did not send high-level negotiators to the talks and is withdrawing for the second time from the 10-year-old Paris Agreement, which is being celebrated as a partial achievement here in Belem.

AP Story by Seth Borenstein

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