In a First, Rich Countries Agree to Pay for Climate Damages in Poor Nations

After 30 years of deadlock, a new U.N. climate agreement aims to pay developing countries for loss and damage caused by global warming. But huge questions remain about how it would work.

SHARM EL SHEIKH, Egypt — Negotiators from nearly 200 countries concluded two weeks of talks early Sunday in which their main achievement was agreeing to establish a fund that would help poor, vulnerable countries cope with climate disasters made worse by the pollution spewed by wealthy nations that is dangerously heating the planet.

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