Vol. 165 No. #11

More Stories from the March 13, 2004 issue

  1. Physics

    Radioactive sprinkles keep machines true

    Needing tiny radioactive sources to calibrate medical scanners with ever-sharper vision, an Australian team dipped tiny balls the size of candy sprinkles into a radioactive liquid.

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  2. Materials Science

    Cinching nanotubes into tough fibers

    Irradiating bundles of carbon nanotubes can lead to tougher fibers.

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  3. Chemistry

    New champions among corrosive microbes

    Newly discovered strains of bacteria have developed a metabolic shortcut for eating away iron with great efficiency.

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  4. Earth

    Deep Pacific waters warmed in recent years

    Oceanographic data gathered across the North Pacific in 1985 and again in 1999 indicate that the deepest waters there have been heating up.

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  5. Anthropology

    Extinct ancestor wasn’t so finicky

    Contrary to much anthropological thought, the genus Paranthropus showed as much dietary and behavioral flexibility as ancient Homo species did between 3 million and 1 million years ago.

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  6. Earth

    Pompeii debris yields calamity clues

    The magnetic characteristics of rocks and debris excavated from Pompeii reveal the changing temperatures of the volcanic ash cloud that smothered the Italian city in A.D. 79.

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  7. Health & Medicine

    Two arthritis drugs work best in tandem

    Two anti-inflammatory drugs for rheumatoid arthritis—methotrexate and etanercept—work better together than either does individually.

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  8. Earth

    Diesel fumes suppress immune response

    Recurring exposure to soot particles from diesel exhaust fumes reduces the immune system's capacity to fend off infection, tests on rodents indicate.

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  9. Scrambled Dogma: Stem cells may make new eggs in women

    Scientists may have come up with a new explanation for how a woman's biological clock works.

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  10. Anthropology

    Brain Size Surprise: All primates may share expanded frontal cortex

    A new analysis of brains from a variety of mammal species indicates that frontal-cortex expansion has occurred in all primates, not just in people, as scientists have traditionally assumed.

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  11. Astronomy

    Deepest Vision Yet: Hubble takes ultralong look at the cosmos

    Astronomers unveiled the deepest visible-light portrait of the universe ever taken, a million-second-long exposure by the Hubble Space Telescope that includes near-infrared images of what appear to be the most-distant galaxies known.

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  12. Health & Medicine

    Shutting Off an On Switch: Novel drugs slow two cancers in mice

    By shutting down a signaling molecule on cancerous cells, scientists have found a way to slow multiple myeloma and fibrosarcoma, tests in animals show.

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  13. Tech

    Special Treatment: Fuel cell draws energy from waste

    Researchers have created a fuel cell that breaks down organic matter in wastewater and, in the process, generates small amounts of electricity.

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  14. Health & Medicine

    Meat of the Matter: Fish, flesh feed gout, but milk counters it

    Nutrition research supports the ancient notion that a diet rich in meat contributes to the development of gout, a form of arthritis common in men.

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  15. Animals

    New Green Eyes: First butterfly that’s genetically modified

    Scientists have genetically engineered a butterfly for the first time, putting a jellyfish protein into a tropical African species so that its eyes fluoresce green.

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  16. Health & Medicine

    Born to Heal

    The controversial strategy of screening embryos to produce donors for siblings raises hopes and presents new ethical dilemmas.

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  17. Planetary Science

    A New Flight Plan

    President Bush recently unveiled an ambitious plan for a manned mission to Mars, using the moon as a testing area and stepping-stone, but for many planetary scientists the moon is a desirable destination in and of itself.

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  18. Humans

    Letters from the March 13, 2004, issue of Science News

    Dry hole? “Tapping sun’s light and heat to make hydrogen” (SN: 1/17/04, p. 46: Tapping sun’s light and heat to make hydrogen) seems to be delivering good news for the environment: “Clean” hydrogen can be produced from water using solar energy. This seems to me, however, to be even more horrifying than the burning of […]

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