Earth

  1. Earth

    Green lightning may be caused by positive charges, or by camera lens

    Physicist offers possible explanations for stunning photograph of volcanic eruption.

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  2. Environment

    World’s worst polluted

    A new report by Green Cross Switzerland and the Blacksmith Institute lists places posing the greatest risk to human health.

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  3. Climate

    Coldest place moves from one Antarctic site to another

    New record low measured by satellite.

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  4. Ecosystems

    Online map tracks forest shifts from space

    By layering more than 650,000 satellite images onto a Google map, researchers have created a new tool to track forest cover.

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  5. Earth

    Earth’s plate boundaries may nurture diamond formation

    An experiment mimicking conditions deep in the Earth suggests that some tectonic plate boundaries may make ideal diamond nurseries.

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  6. Earth

    Cryovolcano

    An ice volcano that erupts slurries of volatile compounds such as water or methane instead of lava.

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  7. Climate

    Methane emissions may be far higher than estimated

    U.S. fossil fuel and cattle industries may emit far more methane than government estimates indicate.

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  8. Agriculture

    Probiotics may protect piglets from E. coli infection

    Beneficial bacteria could replace antibiotics in pig feed.

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  9. Animals

    Malformed frogs rarer than thought

    Frogs with skin cysts or shortened or missing legs make up only 2 percent of the amphibians collected during a 10-year study.

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  10. Climate

    Arctic algae crusts preserve climate data

    The records show that sea-ice cover has been declining since 1850.

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  11. Earth

    Fire may smolder under Antarctic ice

    Quakes hint at moving magma that could influence glacial flow.

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  12. Oceans

    Extremely salty water is at least 100 million years old

    Supersaline sediments off East Coast shed light on Atlantic Ocean’s early history.

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