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Robert L. Tignor

Robert L. Tignor

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Robert L. Tignor is Professor of History at Princeton University. His latest book is Egypt: A History.

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  6. sachs351_Francesco FotiaAGFUniversal Images Group via Getty Images_g20 climate Francesco FotiaAGFUniversal Images Group via Getty Images

    The G20 and the Means to Climate Safety

    Jeffrey D. Sachs

    At the group’s upcoming meeting in Rome, many member governments will press for more ambitious action to address climate change. But these governments must also be prepared to call out the climate laggards, starting with the United States.

     lists six imperatives that should guide policymakers’ efforts to achieve net-zero emissions by mid-century.
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