Those who doubt the overwhelming evidence that climate change is real and urgent tend to decry the cost. But the costs of doing nothing — to you, to us, to the planet — would be ruinous.
Climate change can be expected to shave 11 to 14 percent off global economic output by 2050 compared with growth levels without warming, according to a new report — as much as $23 trillion in reduced annual global economic output worldwide.
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