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Caleb Scharf

Caleb Scharf

Writing for PS since 2014
1 commentaries
0 videos & podcasts

Caleb Scharf is Director of Astrobiology at Columbia University. His next book, The Copernicus Complex, will be published in September 2014.

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  2. bildt71_HOW HWEE YOUNGAFP via Getty Images_vonderleyenchinaarmy How Hwee Young/AFP via Getty Images

    Which Way for Europe on China?

    Carl Bildt

    Under its new leadership, the European Union has promised to step up its engagement on the world stage to ensure that it does not become a pawn in an escalating Sino-American great-power rivalry. To succeed, it will have to strike a careful balance between economic priorities and its own security.

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  7. wei22_FABRICE COFFRINIAFP via Getty Images_WTOredlight Fabrice Coffrini/AFP via Getty Images

    How to Revive the WTO

    Shang-Jin Wei & Xinding Yu

    The World Trade Organization’s appellate body is under threat not from China, but from the United States, which is blocking the appointment of new judges to the panel. Reviving the WTO will require changes to the organization's rules – but killing its dispute-settlement system is not the solution.

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