U.S. Deputy Climate Envoy Sue Biniaz, right, and Wopke Hoekstra, EU climate commissioner, second from right, walk out of an elevator during the COP29 U.N. Climate Summit in the early hours of Saturday, Nov. 23, 2024, in Baku, Azerbaijan. (AP Photo/Joshua A. Bickel)

Australia Climate Minister Chris Bowen, center, walks through a hallway at the COP29 U.N. Climate Summit in the early hours of Saturday, Nov. 23, 2024, in Baku, Azerbaijan. (AP Photo/Joshua A. Bickel)

Activists demonstrate in silence protesting a draft of a proposed deal for curbing climate change at the COP29 U.N. Climate Summit, Friday, Nov. 22, 2024, in Baku, Azerbaijan. (AP Photo/Rafiq Maqbool)

People sleep in the Chinese delegation offices at the COP29 U.N. Climate Summit in the early hours of Saturday, Nov. 23, 2024, in Baku, Azerbaijan. (AP Photo/Joshua A. Bickel)

John Podesta, U.S. climate envoy, right, walks through the hallways of the COP29 U.N. Climate Summit in the early hours of Saturday, Nov. 23, 2024, in Baku, Azerbaijan. (AP Photo/Joshua A. Bickel)