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Taxing carbon to account for its environmental and human health damages is the efficient way to cut CO2 emissions. And that’s what most economists are advocating. But progressives appear to prefer the government mandates embedded in the Green New Deal. Both approaches (and others) could probably be made to work…the problem is that we don’t have a majority supporting any single policy intervention. This could cause an enduring stalemate at a time when delayed action is so costly. Think of where we could be today if we’d enacted more vigorous policies two decades ago — like those described in the 5-lab report: “Scenarios for a Clean Energy Future”. It had close to 20-20 foresight!