The return of Brazil’s president Luiz Inácio Lula da Silva to UN climate talks was hoped to spur nations to meet a self-imposed early deadline for progress on tough issues.

United Nations climate talks are bubbling to a critical point, with host Brazil pressing negotiators to make progress on key issues.

At the halfway point of annual United Nations climate negotiations in Brazil, it appears the talks may do more than just focus on implementing past promises, as some observers had expected.

U.N. climate negotiations are underway in Brazil, and leaders are pushing for accelerating efforts to curb global warming by drastically reducing the carbon pollution that causes it.

This year's United Nations climate conference in November is in Belem, Brazil, a city facing high poverty and infrastructure challenges.

With the first U.N. climate talks in the Amazon approaching, thousands of Indigenous people marched Tuesday in Brazil’s capital, demanding the state guarantee and expand their rights to traditional lands as part of the solution to the world’s climate crisis.