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  1. Earth

    Freeze-thaw cycles: How not to mix soil

    The repeated cycles of ground freezing and thawing that occur in many places don't do a surprising poor job of churning the soil.

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  2. Kill-save gene combo might fight malaria

    A technique that might someday enlist mosquitoes in the fight against malaria has passed an early test.

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  3. Earth

    Wave’s-eye view of a hurricane

    Strong hurricanes aren't as effective at transmitting their energy to the ocean's surface as weak ones are, a counterintuitive finding that may help researchers estimate the size of storm surges.

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  4. Rare flower needs prickly neighbors

    A flowering plant found only in Mauritius makes more fruit if dense stands of pandanus trees grow nearby.