David Ropeik

David Ropeik is an instructor at the Harvard School of Continuing Education and the author of How Risky Is It, Really? Why Our Fears Don't Always Match the Facts.

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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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