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Caleb Scharf

Caleb Scharf

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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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  1. Our Cosmic Context
    CosmosCrossSection_NASA_ESA_Hubble NASA/ESA/Hubble

    Our Cosmic Context

    May 5, 2014 Caleb Scharf explains how investigations into life on other planets help us to understand Earth's challenges.

  1. dahn1_Mark WilsonGetty Images_USfederalreserve Mark Wilson/Getty Images
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    Enjoy the Soft Landing

    J. Bradford DeLong marvels at the continued strength of the US economy following rapid monetary-policy tightening.
  2. gros190_ANDER GILLENEAAFP via Getty Images_solar panels ANDER GILLENEA/AFP via Getty Images
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    Policymakers’ Green-Tech Fantasy

    Daniel Gros refutes the widespread belief that renewables-related industries could form the foundation of a major economy.
  3. stiglitz331_serggnGetty Images_techregulation serggn/Getty Images
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    Marietje Schaake on our tech overlords, antitrust, data protection, and more

    Marietje Schaake warns that Big Tech’s outsize influence threatens democracy, suggests what Western leaders can learn from Chinese technology governance, urges governments to use public procurement to influence the trajectory of digital technology, and more.
  4. fischer211_MAHMUD HAMSAFP via Getty Images_israel MAHMUD HAMS/AFP via Getty Images
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    Capitalizing on the Weakening of Hamas and Hezbollah

    Dennis Ross

    The massive losses suffered by Hezbollah and Hamas – and the weakening of Iran’s so-called “axis of resistance” – needs to be seen in strategic terms. Put simply, it creates an opening to transform for the better not just Gaza and Lebanon but also much of the region.

     thinks Israel’s decimation of Iran’s proxies in Gaza and Lebanon must be viewed in strategic terms.
  5. buruma218_ JACK GUEZAFP via Getty Images_crisis israel JACK GUEZ/AFP via Getty Images
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    Warrior Nations of the Middle East

    Ian Buruma shows how shame and humiliation have shaped national identities that countenance further killing.
  6. haass167_ANATOLII STEPANOVAFP via Getty Images_ukrainesoldiers Anatolii Stepanov/AFP via Getty Images
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    What Would Victory in Ukraine Look Like?

    Joseph S. Nye, Jr. considers what kind of peace settlement Ukraine might be able to accept in the near term.
  7. donohue2_Getty Images_public defenders Getty Images
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    The Crisis of America’s Public Defenders

    John J. Donohue & Eric A. Baldwin advocate a novel legal framework that could both increase fairness and help reduce crime.
  8. aghion8Getty Images_innovation iStock / Getty Images Plus
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    Can Europe Create an Innovation Economy?

    Philippe Aghion, et al. explain what EU member states must do to stop falling further behind the United States economically.
  9. krueger52_FREDERIC J. BROWNAFP via Getty Images_shipping port us FREDERIC J. BROWN/AFP via Getty Images
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    Trump’s Proposed Tariffs Are a Gift to the Rich

    Simon Johnson cites research showing that middle-class US households would foot the bill.

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