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  1. Physics

    Being single a real drag for spores

    Launching thousands of gametes at once helps a fungus waft its offspring farther.

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  2. Tech

    Tiny tools aren’t toys

    Enzyme-based machinery could have medical applications.

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  3. Climate

    Annual Arctic ice minimum reached

    Melt isn’t as bad as 2007, but still reaches number three in the record books.

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  4. Humans

    Neandertals blasted out of existence, archaeologists propose

    An eruption may have wiped out Neandertals in Europe and western Asia, clearing the region for Stone Age Homo sapiens.

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  5. Life

    Imperfect mimics

    Reprogramming techniques may not produce exact embryonic stem cell replicas.