Earth

  1. Earth

    Snow alga may be sizable carbon sink

    A common microorganism that adds a reddish tinge to some patches of snow may be a significant consumer of planet-warming carbon dioxide.

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  2. Earth

    Earth Art

    Brilliant, colorful patches of Earth, as seen in photographs snapped by the Landsat-7 satellite, can look like the work of abstract artists. A number of these beautiful, high-resolution images have now been assembled into an online gallery depicting “Our Earth as Art.” Go to: http://landsat.gsfc.nasa.gov/earthasart/

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  3. Earth

    The Case for DDT

    What do you do when a dreaded environmental pollutant saves lives?

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  4. Earth

    Northern Vents: Arctic shows surprising hydrothermal activity

    A recent survey along a midocean ridge beneath the Arctic icepack unveiled an unexpected abundance of hydrothermal activity.

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  5. Earth

    Predicting geomagnetic storms

    Recent observations with an Earth-orbiting spacecraft may provide new ways to predict when solar temper tantrums will cause the geomagnetic storms that disrupt communications systems on Earth and harm satellites.

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  6. Earth

    Candid cameras catch rare Asian cats

    Remote cameras have confirmed that despite 30 years of armed conflict, jungle cats and many other large mammals continue to thrive in Cambodia.

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  7. Earth

    Rivers run to it

    Increasing freshwater discharges into Arctic waters could disrupt important patterns of deep-water ocean circulation that affect climate.

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  8. Earth

    Hawaii’s Hated Frogs

    Wildlife officials in Hawaii are investigating unconventional pesticides to eradicate invasive frogs—or at least to check their advance.

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  9. Earth

    Sulfur Studies: Early Earth’s air was oxygen-poor

    Analyses of ancient sulfide minerals and the modern organisms that create sulfides are giving scientists a better idea of what Earth's atmosphere and oceans may have been like billions of years ago.

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  10. Earth

    Mapping with GRACE

    Global gravity maps compiled from data painstakingly gathered during the last 30 years have now been rendered obsolete by a pair of satellites that were launched just last March.

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  11. Earth

    Mercurial Effects of Fish-Rich Diets

    In the spring of 2000, one of Jane M. Hightower’s patients had been concerned about hair loss, so the internist referred the woman to a specialist in her building. That dermatologist probed the woman’s medical history but could find no explanation. That is, until she suddenly recalled a radio broadcast about mercury poisoning in people […]

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  12. Earth

    Life at the Frigid Edge: Microbes turn up deep in Antarctic lake ice

    A pocket of cold, concentrated saltwater at the bottom of an Antarctic lake could harbor life, say researchers who found microbes in the ice right above the briny layer.

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