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  1. Space

    Meteorites could have thickened primordial soup

    New experiments show that extraterrestrial impacts that occurred early in our planet's history could have created the raw materials for life.

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  2. Math

    Traveler’s Dilemma: When it’s smart to be dumb

    Some game theory paradoxes can be resolved by assuming that people adopt multiple personae, and aren’t rational.

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  3. Health & Medicine

    Honeybee CSI: Why dead bodies can’t be found

    Virus could explain one symptom of colony collapse.

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  4. Life

    Protect biodiversity hot spots and the rest will follow

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  5. Science & Society

    Book Review: Where Our Food Comes From: Retracing Nikolay Vavilov’s Quest to End Famine by Gary Paul Nabhan

    Review by Janet Raloff.