Daniel P. Ahn

Daniel P. Ahn is the Adjunct Fellow for Energy at the Council on Foreign Relations. He blogs at “Energy, Security, and Climate.”

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Cryotherapy's Dubious Appeal

James Hamblin tries a questionable medical treatment.

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Confessions of Moms Around the World

In Europe, mothers get maternity leave, discounted daycare, and flexible working hours.

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How Do Trees Know When It's Spring?

The science behind beautiful seasonal blooming

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