About 50,000 people are expected to attend the 12-day climate summit in the Brazilian city of Belem.
Published On 10 Nov 2025
The 30th annual United Nations climate change conference (COP30) has started in the Brazilian city of Belem, with leaders calling for countries to take a united approach against global warming.
“In this arena of COP30, your job here is not to fight one another – your job here is to fight this climate crisis, together,” the UN’s climate chief, Simon Stiell, told delegates on Monday.
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Some 50,000 people from more than 190 countries are expected to attend the 12-day event, which is being held at the edge of the Brazilian Amazon rainforest.
Addressing the conference, Stiell said that previous climate talks had helped, but that there was “much more work to do”.
The UN climate boss noted that countries would have to move “much, much faster” in driving down greenhouse gas emissions. “Lamenting is not a strategy. We need solutions,” he said.
His comments came as a new UN analysis of countries’ climate plans found that the pledged reductions fall far short of the drop needed by 2035 to limit temperatures to 1.5C (2.7F) above pre-industrial temperatures.
If this threshold is breached, the world will experience far more severe impacts than it has so far, experts say.
“Climate change is no longer a threat of the future. It is a trag