Climate Change Costs By 2100: Doing Nothing Has the Same Price Tag as Doing Something

Adapting to climate change would cost roughly the same as trying to slow it by Ronald Bailey – “Without additional mitigation, and even with adaptation, warming by the end of the 21st century will lead to high to very high risk of severe, widespread, and irreversible impacts globally.” So warns the Intergovernmental Panel on Climate Change (IPCC) in a draft of its Synthesis report leaked to Bloomberg News. Lurking behind those first seven words is a political choice: To what extent do we react to climate change by trying to stop it, and to what extent do we respond by trying to adapt to it? Which approach will yield more benefits, and which will impose more costs? The final report, due in November, will combine and summarize the findings in the IPCC’s three earlier reports this year. The first of those reports looked at the scientific evidence for man-made global...

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