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Caleb Scharf

Writing for PS since 2014
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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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Our Cosmic Context

NASA/ESA/Hubble

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

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How to Protect Workers Without Trade Tariffs

Jul 17, 2018 Robert J. Shiller thinks governments should encourage “livelihood insurance” by subsidizing coverage for at-risk jobs.

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JUSSI NUKARI/AFP/Getty Images

The Long Human-Rights March

Jul 17, 2018 Aryeh Neier commends German Chancellor Angela Merkel for once again spending political capital in service of her values.

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Jonathan Torgovnik/Getty Images

Let There Be More Than Light

Jul 17, 2018 Bjørn Lomborg argues that the benefits of fossil-fuel energy for the world's poor far outweigh the climate costs.

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Fernando Macas Romo/EyeEm/Getty Images

Three Cheers for Regulation

Jul 17, 2018 Diane Coyle shows how setting rules can create markets, boost competition, and protect consumers.

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The Evolution of Global Governance

Jul 17, 2018 Jim O'Neill talks to PS Associate Editor Greg Bruno about the future of global economic governance.

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Christopher Furlong/Getty Images

The British History of Brexit

Jul 16, 2018 Robert Skidelsky is unpersuaded that crashing out of the EU in March 2019 would be economically catastrophic for Britain.

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David Degner/Getty Images

How the Middle East Can Escape the Middle-Income Trap

Jul 16, 2018 Ferid Belhaj & Rabah Arezki call for the creation of a new digital economy in the Middle East and North Africa.

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Todd Korol/Toronto Star via Getty Images

Fossil-Fuel Doublespeak

Jul 16, 2018 Lili Fuhr & Hannah McKinnon debunk the oil and gas industry's claims about how it can address climate change while increasing output.

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