Vol. 167 No. #15
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More Stories from the April 9, 2005 issue

  1. Planetary Science

    Dusty rejuvenation

    The Mars rover Spirit recently had its dirty solar arrays cleaned off, possibly by a dust devil, allowing the craft to generate nearly as much energy as it did when it first landed on the Red Planet in January 2004.

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  2. Plants fix genes using copies from ancestors

    Some plants can reinstate genes missing from their own chromosomes but that had been carried by previous generations.

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  3. Astronomy

    Moon story waxes fuller

    A new analysis may have put the final piece in the puzzle of how the Moon formed.

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  4. Earth

    Lightning creates radiation-safe zone

    A relatively safe region within the seas of radiation that surround Earth owes its existence to lightning storms.

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  5. Phages take breaks while ejecting DNA

    Bacterial viruses, or phages, inject DNA into their prey in a way that is more complicated than researchers had previously thought.

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  6. Animals

    DNA tells pigs’ tale of diverse ancestry

    A genetic study indicates that pigs were domesticated in at least seven different parts of Asia and Europe, not in just two regions, as many researchers had assumed.

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  7. Health & Medicine

    Detecting cancer in a flash

    Instant identification of cancer cells may become possible following experiments demonstrating that healthy and cancerous cells alter laser light in different, and distinguishable, ways.

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  8. Physics

    Tense encounters drive a nanomotor

    Exploiting the relative strength of surface tension forces in the world of tiny objects, a novel type of nanomotor creates a powerful thrust each time molten metal droplets merge.

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  9. Physics

    Lone protein molecule could tip this scale

    A scale-on-a-chip capable of weighing individual, biologically active proteins took a step closer to reality as a minuscule, vibrating bridge detected the mass of a mere 30 xenon atoms.

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  10. Anthropology

    Untangling Ancient Roots: Earliest hominid shows new, improved face

    New fossil finds and a digitally reconstructed skull bolster the claim that the oldest known member of the human evolutionary family lived in central Africa between 6 million and 7 million years ago.

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  11. Health & Medicine

    Molecular Switch: Protein may influence chronic-pain disorder

    A cell-surface protein found in the nervous system may play a central role in a chronic-pain condition known as neuropathy.

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  12. Astronomy

    Stellar Question: Extrasolar planet or failed star?

    A tiny dot of light next to a young, sunlike star might be the long-sought image of an extrasolar planet.

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  13. Remote Control Minds: Light flashes direct fruit fly behavior

    Researchers have exerted a little mind control over fruit flies by designing and installing genetic 'remote controls' within the insects' brains.

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  14. Tech

    Open Sesame: Portable devices may achieve magnetic resonance views

    Top-notch magnetic resonance sensing now found only in hospitals and chemical labs may become available in portable devices, thanks to a new type of magnetic sensor.

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  15. Animals

    Fish Din: Reef clamor attracts young fish settlers

    When looking for a home, young fish seem to prefer a reef that's alive with the sounds of shrimp and fish rather than a quieter environment.

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  16. Chemistry

    Color Trails: Natural dyes in historic textiles get a closer look

    A new chemical technique for extracting natural dyes from ancient textiles could help identify the plant species from which the colorants came.

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  17. Math

    Manuscripts as Fossils

    A new mathematical model estimates how many medieval manuscripts have survived to the present.

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  18. Code of Many Colors

    Researchers have yet to find markers for race in the genome, but understanding the biology underlying perceptions of race could have dramatic social and personal consequences.

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  19. Humans

    Letters from the April 9, 2005, issue of Science News

    Big ideas Your article “Life on the Scales” (SN: 2/12/05, p. 106) reminded me that taking a bird’s song and transposing it down four octaves makes it sound like a whale’s song. The opposite is also true. To hear this, go to http://www.mind.net/music/birdwhaleDemo.mp3. Todd BartonAshland, Ore. The article would imply that the only anomaly to […]

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