The annual report from the U.N. Environment Program lays out how far behind the world is on controlling planet-warming pollution, most of which comes from burning oil, gas and coal.
Right now, the world is headed for at least 4.5 degrees Fahrenheit of warming this century compared to global temperatures in the late 1800s.
If such conditions aren't met, the planet is headed for more than 5 degrees Fahrenheit of warming, the analysis finds.
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