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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. solana109_robert wallisCorbis via Getty Images_manhittingberlinwall Robert Wallis/Corbis via Getty Images

    The Partial Triumph of 1989

    Javier Solana

    The fall of the Berlin Wall in November 1989 marked the end not of a historical chapter, but of a paragraph. Although capitalism currently has no rival, it has proven its compatibility with illiberal forces.

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  5. sachs315_Pablo Rojas MadariagaNurPhoto via Getty Images_chileprotestmanbulletface Pablo Rojas Madariaga/NurPhoto via Getty Images

    Why Rich Cities Rebel

    Jeffrey D. Sachs

    Having lost touch with public sentiment, officials in Paris, Hong Kong, and Santiago failed to anticipate that a seemingly modest policy action (a fuel-tax increase, an extradition bill, and higher metro prices, respectively) would trigger a massive social explosion.

    4

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