Vol. 161 No. #13
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More Stories from the March 30, 2002 issue

  1. Earth

    Zooplankton diet of mercury varies

    By modeling a lake ecosystem in large tubs of water, researchers have found that zooplankton—an important link in the food chain—consume much less toxic methylmercury when the lake experiences an algal bloom.

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  2. Earth

    Rocks in Earth’s mantle could hold five oceans

    Analysis of minerals created in the laboratory under conditions that simulate those deep within the planet suggests that the zone of rocks just outside Earth's core could hold enough water to fill the oceans five times.

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  3. Planetary Science

    Mars Odyssey instrument revived

    Flight controllers have revived an instrument on the Mars Odyssey spacecraft that measures the amount of radiation bombarding the Martian surface.

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  4. Health & Medicine

    Researchers find how rhubarb remedy eases cholera

    Researchers in Japan have identified a natural compound responsible for the effectiveness of one rhubarb-based remedy to combat the overwhelming diarrhea that comes with cholera.

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  5. Astronomy

    Repainting the cosmic palette

    After all the hue and cry about the color of the universe, astronomers have now revised their findings: It’s not pale green, but boring old beige.

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  6. Tech

    Sowing neat rows of seeds on silicon

    A new way to introduce foreign atoms into silicon with atomic-scale precision may help chip manufacturers over a looming hurdle.

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  7. Health & Medicine

    X rays tell stirring tale about fat

    X rays reveal how food processing shapes microscopic crystals of edible fats.

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  8. Icy Birth? Amino acids form in simulations of space ice

    Two experiments simulating the environment of interstellar space have produced amino acids—the building blocks of proteins.

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  9. Archaeology

    Wild Chimps Rocked On: Apes left unique record of stone tools

    Researchers have uncovered the first archaeological site attributed to chimpanzees, which includes stone implements that were used to crack nuts on top of thick tree roots.

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  10. Astronomy

    Long Ago and Far Away: Astronomers find distant galaxy, early cluster

    Peering ever deeper into space and further back in time, two teams of astronomers have uncovered new details about the earliest galaxies and galaxy clusters in the universe.

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  11. Bright Idea: Protein relocation helps eyes adapt to light

    Animals appear to adapt to bright light by reducing their use of proteins involved in the eye's light-detecting systems.

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  12. Health & Medicine

    Deciphering Virulence: Heart-harming bacteria flaunt unique viral genes

    By documenting genetic variation among bacteria responsible for a heart-damaging illness known as rheumatic fever, researchers may have opened paths to new preventive measures and treatments.

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  13. Earth

    All Cracked Up from the Heat? Major hunk of an Antarctic ice shelf shatters and drifts away

    A Rhode Island-size section of an Antarctic ice shelf splintered into thousands of icebergs in a mere 5-week period during the area's warmest summer on record.

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  14. Animals

    Nephews, Cousins . . . Who Cares? Detecting kin doesn’t mean favoring them

    New tests of the amazing nose power of Belding's ground squirrels has solved a 25-year-old puzzle about doing dangerous favors for relatives.

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  15. Tech

    Taming High-Tech Particles

    Researchers are beginning to study whether nanomaterials could have unintended negative consequences in the human body or the environment.

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  16. Animals

    Lemonade from Broken Amber

    The fossilized microbes found inside termites that have been encased in amber for 20 million years are remarkably similar to those found within the ancient insects' modern cousins.

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