By Henry Fountain for The New York Times
Aug. 9, 2021

On Monday the Intergovernmental Panel on Climate Change, a scientific body convened by the United Nations, released a major new report concluding that the world cannot avoid some devastating impacts of climate change, but that there is still a narrow window to keep the devastation from getting even worse.

The report, based on the analysis of more than 14,000 studies, is the clearest and most comprehensive summary yet of the physical science of climate change. It lays out what the climate was like in the past, what it’s like now and what it will be like for decades to come. And it shows how humans can affect future climate through actions they take — or don’t take — now to reduce emissions of carbon dioxide and other heat-trapping gases.

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