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  1. Oceans

    50 years ago, researchers discovered a leak in Earth’s oceans

    An analysis of oceanic rocks hinted that ocean water drains into Earth’s mantle. How much makes it back into the ocean remains unclear.

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  2. Earth

    Earth’s inner core may be more complex than researchers thought

    Seismic waves suggest that Earth has a hidden heart, a distinct region within the solid part of the planet’s core.

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  3. Physics

    Static electricity helps parasitic nematodes glom onto victims

    The small electric charge generated by a moving insect is enough to affect the trajectory of a parasitic nematode’s leap so it lands right on its host.