Vol. 167 No. #12

More Stories from the March 19, 2005 issue

  1. Astronomy

    Puzzling radio blasts

    Astronomers are stumped by powerful radio waves emanating from the center of our galaxy.

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  2. Math

    New largest prime discovered

    Computers have discovered a new largest prime number with a whopping 7,816,230 digits.

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  3. Animals

    Picky-eater termites choose good vibes

    Good vibrations may have a lot to do with which pieces of wood a termite attacks.

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  4. Health & Medicine

    Tungsten-alloy shrapnel might cause cancer

    Wounds caused by shrapnel comprising tungsten alloyed with nickel and cobalt cause cancer in rats, raising questions about the wisdom of using tungsten in munitions.

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  5. Tech

    Remembering, on the cheap

    A new type of cheap plastic memory bit that stays set even when electrical power is off could facilitate the spread of flexible, radio-equipped tags as price tags, identity labels, and surveillance sensors.

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  6. Tech

    Silicon chips land a lasting laser

    The first microchip-size silicon lasers promise to boost the maximum speeds of ordinary computers and electronic gadgets.

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  7. Health & Medicine

    Hepatitis B link to cancer is clarified

    A kind of hepatitis B called genotype C is more likely to lead to liver cancer than are other genotypes of the hepatitis virus.

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  8. Materials Science

    Nanostructures mimic Inuit stone sculptures

    Chemists have created nanoscale versions Inuit rock sculptures, an advance that could facilitate the development of next-generation sensors and electronic devices.

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  9. Chemistry

    Parrot plumage has exclusive pigmentation

    The spectacular colors of parrot feathers owe their vibrancy to a set of pigments found nowhere else in nature.

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  10. Planetary Science

    Saturn says ‘cheese’

    Astronomers have assembled the largest and most-detailed global portrait of the ringed planet ever made.

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  11. Earth

    Nano Hazards: Exposure to minute particles harms lungs, circulatory system

    Inhaling microscopic nanospheres and nanotubes, as might occur during their manufacture or commercial use, could trigger damage well beyond the lungs.

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  12. Animals

    Vampires Run: Bats on treadmills show high-speed gait

    The first test of vampire bats on a treadmill shows that they've evolved their own style of running.

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  13. Schizophrenia Syncs Fast: Disconnected brain may lie at heart of disorder

    A misalignment of electrical outbursts by large numbers of neurons may play a major role in schizophrenia.

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  14. Sugar Coated: Molecular dress-up may disguise gut bacteria

    The mammalian immune system doesn't attack native gut bacteria as foreign invaders because the bacteria disguise themselves with sugar molecules.

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  15. Humans

    Student Scientists to Watch: With diverse ideas, young talents win big in annual competition

    With science projects by 40 of the nation's brightest high school students arrayed before them last week, judges had the task of weighing the merits of undertakings as diverse as the study of deep-sea volcanism and the development of a promising new antibiotic.

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  16. Health & Medicine

    Vitamin E Loses Luster: Nutrient tests show disappointing results

    In people who have a history of heart disease or diabetes, vitamin E supplements don't improve overall health and might even boost heart-failure risk.

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  17. Physics

    Light’s Hidden Holdup: Reflected laser beams loiter a little

    Using an ultrashort pulse laser, physicists have measured a minuscule time delay that affects light reflecting off many surfaces.

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  18. Animals

    Cops with Six Legs

    Insects commit crimes against their colonies, and researchers are taking a closer look at how these six-legged criminals get punished.

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  19. Earth

    A Whiff of Danger

    Synthetic fragrance chemicals can inhibit the activity of molecules that cells depend on to eject harmful substances.

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  20. Humans

    Letters from the March 19, 2005, issue of Science News

    Chew on this As an occasional betel nut chewer, I note that the report “Palm-Nut Problem” (SN: 1/15/05, p. 43) doesn’t touch on possible positive aspects of the habit. Chewing sapari (coarsely powdered, sweetened, and clove-flavored areca nut) at the end of a meal leads to a sense of satisfaction and well-being, induces salivation, and […]

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