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5510 Contributors, 82 Regular Contributors

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  1. Roberto Zagha

    1 Commentary

    Roberto Zagha is a former World Bank Country Director for India and Secretary of the Commission on Growth and Development.

  2. Carl Zimmer

    Writing for PS since 2001
    1 Commentary

    The author of Parasite Rex and writes regularly on evolution in the journal "Natural History."

  3. Richard Zeckhauser

    Richard Zeckhauser

    Writing for PS since 2001
    1 Commentary

    Professor of Political Economy at the John F. Kennedy School of Government.

  4. Anton Zeilinger

    Anton Zeilinger

    Writing for PS since 2001
    1 Commentary

    Professor of Experimental Physics at the University of Vienna, Austria, where he and his group are doing research in photonic entanglement and molecular optics to test the most fundamental issues in quantum physics.

  5. Jose Zalaquett

    Jose Zalaquett

    Writing for PS since 2002
    1 Commentary

    Human rights activist and Professor of International Law at the University of Chile.

  6. John Ziman

    Writing for PS since 2002
    1 Commentary

    Fellow of the Royal Society and Emeritus Professor of Physics at the University of Bristol.

  7. Ernesto Zedillo

    Ernesto Zedillo

    Writing for PS since 2003
    3 Commentaries

    Ernesto Zedillo is a former president of Mexico (1994-2000) and a member of the Global Commission on Drug Policy.

  8. G. P. Zachary

    G. P. Zachary

    Writing for PS since 2004
    11 Commentaries

    G. Pascal Zachary is the author of Married to Africa: a Love Story.

  9. Salomé Zourabichvili

    Writing for PS since 2006
    1 Commentary

    Salomé Zourabichvili is a former Minister of Foreign Affairs of Georgia, and the leader of one of Georgia’s opposition parties.

  10. Jonathan Zittrain

    Writing for PS since 2006
    1 Commentary

    Jonathan Zittrain is a Professor at Harvard Law School and co-founder of the Berkman Center for Internet and Society there. He is also a Professor at Oxford University's Oxford Internet Institute

  11. Paul J. Zak

    Paul J. Zak

    Writing for PS since 2006
    1 Commentary

    Paul J. Zak, a fellow at the Gruter Institute and director of Claremont Graduate University's Center for Neuroeconomics Studies, is editor of Moral Markets: The Critical Role of Values in the Economy.

  12. Phillip Zimbardo

    Phillip Zimbardo

    Writing for PS since 2008
    1 Commentary

    Philip Zimbardo is Emeritus Professor of Psychology at Stanford University. See www.lucifereffect.com

  13. Zeina Zaatari

    Writing for PS since 2008
    1 Commentary

    Zeina Zaatari is senior program officer for the Middle East and North Africa for the Global Fund for Women.

  14. Femke V. Zeijl

    Femke V. Zeijl

    Writing for PS since 2008
    1 Commentary

    Femke van Zeijl is a Dutch writer and journalist primarily working in Sub-Saharan Africa. Her most recent book Een nacht in een vijzel looks at women's lives in Mozambique, Sudan, Rwanda, Burundi, Uganda and the Democratic Republic of the Congo.

  15. Luigi Zingales

    Luigi Zingales

    Writing for PS since 2008
    28 Commentaries

    Luigi Zingales, Professor of Finance at the University of Chicago, is Co-Host of the podcast Capitalisn’t.

  1. bp immigration Photo by Brandon Bell/Getty Images

    The Immigration Tinderbox

    In the United States and Europe, immigration tends to divide people into opposing camps: those who claim that newcomers undermine economic opportunity and security for locals, and those who argue that welcoming migrants and refugees is a moral and economic imperative. How should one make sense of a debate that is often based on motivated reasoning, with emotion and underlying biases affecting the selection and interpretation of evidence?

  2. arezki19_MARCO LONGARIAFP via Getty Images_senegalelection Marco Longari/AFP via Getty Images

    Senegal’s Election and Africa’s Future

    Rabah Arezki considers what Bassirou Diomaye Faye's presidency could mean for one of Africa's most closely watched democracies.
  3. disparte5_ Kevin DietschGetty Images_FSOC Kevin Dietsch/Getty Images

    America Must Lead on Crypto Regulation

    Dante Alighieri Disparte

    To maintain its position as a global rule-maker and avoid becoming a rule-taker, the United States must use the coming year to promote clarity and confidence in the digital-asset market. The US faces three potential paths to maintaining its competitive edge in crypto: regulation, legislation, and designation.

    urges policymakers to take decisive action and set new rules for the industry in 2024.
  4. gul6_Hasan MradDeFodi Images via Getty Images_ghannouchi Hasan Mrad/De Fodi Images via Getty Images

    Rached Ghannouchi’s Plight Deserves More Attention

    Abdullah Gül decries the prosecution and imprisonment of Tunisia's widely respected avatar of Islamic democracy.
  5. okonjoiweala27_GIUSEPPE CACACEAFP via Getty Images_WTO13ministerialconference Giuseppe Cacace/AFP via Getty Images

    WTO Reform Is Everyone’s Responsibility

    Ngozi Okonjo-Iweala

    The World Trade Organization’s most recent ministerial conference concluded with a few positive outcomes demonstrating that meaningful change is possible, though there were some disappointments. A successful agenda of reforms will require more members – particularly emerging markets and developing economies – to take the lead.

    writes that meaningful change will come only when members other than the US help steer the organization.
  6. bloomberg7_Chris HondrosGetty Images_UScaloriesmenu Chris Hondros/Getty Images

    What Can Stop the Shortening of American Lives?

    Michael R. Bloomberg shows how a loss of public trust in public-health professionals is undercutting US life expectancy.
  7. roach163_ROBERTO SCHMIDTAFP via Getty Images_mikegallagher Roberto Schmidt/AFP via Getty Images

    American Sinophobia

    Stephen S. Roach warns that fear has driven US policymakers to level a litany of unsubstantiated charges against China.
  8. kabubomariara2_Gerald AndersonAnadolu Agency via Getty Images_motherkenya Gerald Anderson/Anadolu Agency via Getty Images

    Africa’s Prosperity Depends on Achieving Gender Equality

    Jane Kabubo-Mariara outlines steps policymakers can take to redistribute unpaid domestic work among households and communities.
  9. lacroix2_ Michael GonzalezGetty Images_texasUSflags Michael Gonzalez/Getty Images

    Texas and the Perpetual Crisis of American Federalism

    Alison L. LaCroix highlights the constitutional threat posed by the state's attempt to impose its own immigration policy.

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