Earth

  1. Earth

    Earth Views

    The “Global View of the Earth” Web site offers lesson plans and other material for middle school teachers interested in classroom use of images taken by NASA’s Landsat-7 satellite. Students learn about the spacecraft and try to identify “mystery” images–full-color, visible-light images of objects such as airports and bridges, as seen from Landsat more than […]

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  2. Earth

    Autosub Under Ice

    Follow the Southampton (UK) Oceanography Centre’s “Autosub Under Ice” expedition to Antarctica’s Pine Island Bay. The centre’s Web site features daily news reports, images, and interviews with expedition members aboard the unmanned sub’s parent ship. The expedition runs until April 2. Go to: http://www.soc.soton.ac.uk/SOES/MSC/OC/CEO/aui/live.html

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  3. Earth

    Slippin’ Slide: Glaciers surge after ice shelf collapses

    Five of the six large glaciers that once fed into Antarctica's Larsen A ice shelf have sped up significantly since that floating ice mass collapsed and drifted away in January 1995.

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  4. Earth

    Greenland’s ice is thinner at the margins

    The central portion of Greenland's ice sheet is, on the whole, not getting any thinner, but most margins of the ice sheet are thinning substantially and contributing to rising sea levels.

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  5. Earth

    Ancient Taint: Likely source of old dioxins identified

    Lab experiments show that the burning of peat from coastal areas of Scotland could be responsible for the enigmatic concentrations of dioxins sometimes found in pre-20th-century soils.

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  6. 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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  7. 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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  8. Earth

    An Ounce of Prevention

    Fresh approaches may cut back greenhouse-gas emissions.

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  9. Earth

    The Motion in the Ocean

    Scientists dive deep to learn how the sea circulates.

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  10. 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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  11. 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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  12. 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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