Earth

  1. Earth

    Sexual Hang-Up: Fish hormones change when oxygen is scarce

    Oxygen deprivation—an escalating problem in freshwater ecosystems worldwide—tampers with sex hormones in carp and might underlie the decline in some fish and amphibian species.

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  2. Earth

    A Safe Solution

    A home-based technique for treating microbe-contaminated water with chlorine solution could save millions of lives in countries that are currently unable to provide residents with safe drinking water.

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  3. Earth

    An Ounce of Prevention

    Fresh approaches may cut back greenhouse-gas emissions.

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  4. Earth

    The Motion in the Ocean

    Scientists dive deep to learn how the sea circulates.

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  5. Earth

    If It’s Wet in Malaysia . . . : Afghan droughts linked to rain in Indian Ocean

    An analysis of nearly 2 decades of weather patterns suggests a link between an abundance of precipitation in the eastern Indian Ocean and a lack of rain in portions of southwestern Asia.

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  6. Earth

    Proof of Burden

    Two teams of scientists report that the blood and urine of most Americans contain toxic cocktails of metals, artificial hormones, and chemical ingredients of plastics, flame retardants, pesticides, herbicides, and disinfectants.

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  7. Earth

    Dirty Story: Farming has increased flow of soil onto reef

    Agricultural practices that early European settlers brought to eastern Australia sped the pace at which soil washes out to sea and settles over the Great Barrier Reef.

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  8. Earth

    9/11 ash, and more, found in river muck

    Sediment cores pulled from the Hudson River near the World Trade Center site contain a thin layer of metal-rich ash and pulverized debris.

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  9. Agriculture

    Bt Cotton: Yields up in India; pests low in Arizona

    Two cotton-growing centers that could hardly differ more—small farms in India and industrial fields in Arizona—provide case studies that show the bright side of a widespread genetically engineered crop.

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  10. Earth

    Dust devils produce magnetic fields

    Scientists who chase dust devils report that the tiny twisters can produce a small magnetic field that changes magnitude between 3 and 30 times per second.

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  11. Earth

    Enjoy the beach. . .while it’s still there

    Up to a quarter of the structures within 500 feet of America's coastlines may be lost to erosion in the next 60 years, according to a report issued by the Federal Emergency Management Agency last week.

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  12. Earth

    Putting Whales to Work: Cetaceans provide cheap labor in the icy deep

    Whales equipped with environmental sensors discover warm water beneath Arctic ice.

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