Activists participate in a demonstration for transforming food systems at the COP29 U.N. Climate Summit, Tuesday, Nov. 19, 2024, in Baku, Azerbaijan. (AP Photo/Rafiq Maqbool)

Activists participate in a demonstration for transforming food systems at the COP29 U.N. Climate Summit, Tuesday, Nov. 19, 2024, in Baku, Azerbaijan. (AP Photo/Rafiq Maqbool)

Agriculture Secretary Tom Vilsack, center, speaks during a session at the COP29 U.N. Climate Summit, Monday, Nov. 18, 2024, in Baku, Azerbaijan. (AP Photo/Joshua A. Bickel)

Activists participate in a demonstration for transforming food systems at the COP29 U.N. Climate Summit, Tuesday, Nov. 19, 2024, in Baku, Azerbaijan. (AP Photo/Rafiq Maqbool)

Activists participate in a demonstration for transforming food systems at the COP29 U.N. Climate Summit, Tuesday, Nov. 19, 2024, in Baku, Azerbaijan. (AP Photo/Rafiq Maqbool)

A demonstrator holds a placard about the Earth at the COP29 U.N. Climate Summit, Tuesday, Nov. 19, 2024, in Baku, Azerbaijan. (AP Photo/Rafiq Maqbool)