The plea, made in a letter to G20 leaders from top U.N. climate official Simon Stiell, comes as negotiators at the COP29 conference in Baku struggle for a deal intended to scale up money to address the worsening impacts of global warming.

The UN's climate chief urged G20 leaders on Saturday to push COP29 talks towards a deal to raise money for developing nations as diplomats struggled to find common ground in marathon negotiations.

Negotiators at UN talks in Azerbaijan hit an impasse on climate finance that they hope leaders of the world’s 20 major economies can break.

The UN's climate chief urged G20 nations on Saturday to push COP29 negotiations towards a deal to raise money for developing nations, warning there

Diplomatic tensions over global warming will take center stage at the G20 summit in Brazil this week, as negotiators at U.N. talks in Azerbaijan hit an impasse on climate finance that they hope leaders of the world's 20 major economies can break.