SHARM EL-SHEIKH, Egypt (AP) — With the world on “a highway to climate hell with our foot on the accelerator,'' the United Nations chief on Monday told dozens of leaders to â€cooperate or perish," singling out the two biggest polluting countries, China and the United States.

U.N. Secretary-General Antonio Guterres wasn't alone in preaching with tones of fire and brimstone to try to shake up the world's sense of urgency at this year’s annual U.N. climate conference.

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