by Signe Krogstrup and Maurice Obstfeld

 December 3, 2018

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A wolf in the snow: the planet isn’t crying wolf as man’s economic activities reach a scale where the global climate is at risk (photo: ImageBroker/ David MichaSheldon/Newscom)

The COP-21 Paris Agreement limiting greenhouse gas emissions was a major achievement on the road to meeting the threat of climate change. But as the evidence becomes increasingly unambiguous that human activity is destabilizing the Earth’s climate and biosphere, policymakers will need to do more. […]