A weather pattern known as La Niña that has worsened drought conditions across the U.S. Great Plains has faded, according to the U.S. Climate Prediction Center. But it could be replaced late this year by one called El Niño, which often roils agriculture and energy markets around the world.

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The average temperature across global land and ocean surfaces during 2017 was 1.51 degrees Fahrenheit (0.84 degrees Celsius) above the twentieth-century average, says a government report.