A new special issue of the journal Climate Change Economics contains two ground-breaking economic analyses of policies to hold global temperatures to 1.5 degrees and its practical political interpretation, mandates to reach net zero, usually by 2050. Though more than 130 countries, including most of the globe's big emitters, have passed or are considering laws mandating net-zero carbon emissions, there's been no comprehensive cost-benefit evaluation of that policy-until now.
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