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.

  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.

  3. Animals

    West Nile virus hits bird populations

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

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  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.

  16. Humans

    Summer Reading

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

  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.

  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 […]