'Hothouse Earth' Lays Out Doomsday Scenario, But We're Not There Yet, Climate Scientists Say
In this July 21, 2016, file photo, the sun sets beyond visitors to Liberty Memorial on Thursday, July 21, 2016, as the temperature hovers around 100 degrees in Kansas City, Mo.
( AP Photo/Charlie Riedel, File )
( AP Photo/Charlie Riedel, File )
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