Vol. 171 No. #26
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More Stories from the June 30, 2007 issue

  1. Tech

    A computer in every cell

    Artificial genes inserted into cells make RNA molecules that can perform logical computations.

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  2. Planetary Science

    Eris dwarfs Pluto

    Ex-planet Pluto suffers another demotion, as observations show that it's much less massive than Eris, another distant denizen of the outer solar system.

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  3. Animals

    West Nile virus hits bird populations

    West Nile virus has hammered populations of five common North American birds.

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  4. Earth

    Double-acting bacteria immobilize toxic nanoparticles

    Bacteria lurking in the bowels of an abandoned Wisconsin mine might help remove toxic metals from polluted water.

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  5. Health & Medicine

    Nerves are key to longevity effect

    The life-extending effect that some animals get from calorie-restricted diets may depend on signals from the brain.

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  6. Chemistry

    A sweet way to replace petroleum?

    Thanks to a new chemical process, many products now manufactured from petroleum could one day be made from sugar molecules.

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  7. Physics

    Stradivari’s secrets

    Three-dimensional imaging of a classic violin's vibrations explains the instrument's superior ability to direct sound to the audience.

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  8. Planetary Science

    Music to alien ears

    Saturn's moon Titan may be the best rock concert venue in the solar system, according to computer simulations of sound propagation on other worlds.

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  9. Tech

    Life Swap: Switching genomes converts bacteria

    Transplanting the entire genome of one species of bacteria into another paves the way for making synthetic microbes with manmade DNA.

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  10. Tech

    Cellular Smugglers: Laden nanoparticles hitch a ride on bacteria

    Molecular cargoes loaded onto nanoparticles can sneak into mammalian cells on the backs of bacteria.

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  11. Tech

    Biowarfare: Engineered virus can invade bacterial film

    A genetically engineered virus not only kills bacteria but makes an enzyme that breaks up the biofilm in which the bacteria live.

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  12. Animals

    Cat History: DNA study finds domestic-cat kin

    DNA evidence shows that the Near Eastern lineage of the wildcat, one of five lineages of Felis silvestris, gave rise to today's domestic kitty cats.

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  13. Health & Medicine

    Alcohol Answer? Drinks lower glucose to protect heart

    Moderate consumption of beer, wine, or gin lowers blood glucose, perhaps helping to stave off type 2 diabetes and heart disease.

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  14. Health & Medicine

    Immune Abuse: Methamphetamine is linked to cardiac damage

    The illicit drug methamphetamine alters immune proteins unleashed in the body, possibly explaining why some longtime methamphetamine abusers suffer heart problems.

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  15. Anthropology

    Ape Aid: Chimps share altruistic capacity with people

    Chimpanzees, as well as 18-month-old children, will assist strangers even when getting no personal reward, suggesting that human altruism has deep evolutionary roots.

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  16. Humans

    Summer Reading

    The staff of Science News presents wide-ranging recommendations of books for readers to pack for their summer vacations.

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  17. Earth

    A Gemstone’s Wild Ride

    Diamonds may be carried to the surface in explosions of gas and rock fizzing up from deep within Earth's mantle.

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  18. Humans

    Letters from the June 30, 2007, issue of Science News

    Hot and cold on the topic No mention was made in “In the Zone: Extrasolar planet with the potential for life” (SN: 4/28/07, p. 259) of the possibility that, being so close to its star and having a 13-day orbital period, the planet would keep the same surface to the star. Having one side baked […]

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