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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. neier64_ALEXANDER NEMENOVAFP via Getty Images_putinbrezhnev Alexander Nemenov/AFP via Getty Images
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    Putin’s Brezhnev Moment

    Aryeh Neier draws parallels between the regime’s ongoing crackdown on civil society and late Soviet repression.
  2. delong249_guoyaGetty Images_economicpie guoya/Getty Images
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    Utopia or Bust

    J. Bradford DeLong considers our options for both expanding and effectively slicing the proverbial economic pie.
  3. op_anheier13_CHRISTOF STACHEAFP via Getty Images_scholzbaerbockhabecklindner Christof Stache/AFP via Getty Images
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    Germany’s Reckoning

    Helmut K. Anheier

    Germany is now grappling with a host of difficult questions about its place in the world, the nature of its politics, and its most cherished values. For a pacifist society in a new age of conflict and war, everything must change if things are to remain the same.

     traces the contours of the country's debate, triggered by the Ukraine war, about its strategic future.
  4. coyle29_ Frank Rumpenhorstpicture alliance via Getty Images_chatgpt Frank Rumpenhorst/picture alliance via Getty Images
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    Preempting a Generative AI Monopoly

    Diane Coyle urges policymakers to take steps to counter the anti-competitive implications of a rapidly emerging market.
  5. nye238_Kevin DietschGetty Images_biden kishida Kevin Dietsch/Getty Images
    1

    Japan’s Strategic Imperative

    Joseph S. Nye, Jr. sees the country doubling down on its best option for ensuring national security and regional stability.
  6. zhang59_JADE GAOAFP via Getty Images_chinahousing Jade Gao/AFP via Getty Images
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    China’s Savings Conundrum

    Zhang Jun explains why – and how – the country must stimulate household consumption to achieve a robust recovery.
  7. BP inflation hawks China News Service / Contributor via Getty Images
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    The Flight of the Inflation Hawks

    Though the US Federal Reserve’s first interest-rate hike of 2023 is smaller than those that preceded it, policymakers have signaled that more increases are on the way, despite slowing price growth. But there is good reason to doubt the utility – and fear the consequences – of continued rate hikes, on both sides of the Atlantic.

  8. boly1_Giovanni MereghettiUCGUniversal Images Group via Getty Images_agriculture rwanda Giovanni Mereghetti/UCG/Universal Images Group via Getty Images
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    How to Transform African Agriculture

    Safia Boly & Omid Kassiri identify four principles that could help governments across the continent boost food security.
  9. borrell19_ FADEL SENNAAFP via Getty Images_ukrainewar Fadel Senna/AFP via Getty Images
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    Making Ukrainian Victory Possible

    Josep Borrell explains why continued military support and other forms of assistance remain critical.

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