U.N. Secretary-General António Guterres ratcheted up his warning about climate change and said the world’s thirst for fossil fuels is a “Frankenstein monster” that spares no one, while calling for greater attention to risks posed by artificial intelligence if its ascent goes ungoverned — even as some leaders played up its promise.

Attendees in the Congress Center at the World Economic Forum (WEF) in Davos, Switzerland, on Tuesday, Jan. 21, 2025. The annual Davos gathering of political leaders, top executive