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  1. Planetary Science

    Cometary encounter

    Planetary scientists are feasting on close-up images of Comet Wild 2 as well as on the first information about its composition.

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  2. Ecosystems

    More on California’s rogue seaweed

    Scientists have obtained genetic confirmation of the assumption that a newfound rogue alga in California waters is the same strain that has been smothering seafloor communities in the Mediterranean.

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  3. Earth

    Sprawl’s aquatic pollution

    A new study links the traffic associated with urban sprawl to an unexpectedly large rain of air pollutants entering local waters.

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  4. Drug-resistance gene found—again

    A mutant gene confers resistance to chloroquine upon parasites that cause malaria.