Vol. 162 No. #1
Archive Issues Modal Example

More Stories from the July 6, 2002 issue

  1. Health & Medicine

    Appetite-suppressing drug burns fat, too

    An experimental drug seems to assail obesity through dual biological actions.

  2. Materials Science

    Spring in your step? The forces in cartilage

    Researchers are uncovering the role of molecular forces in cartilage's ability to resist compression.

  3. Caregivers take heartfelt hit

    Older persons experience elevated systolic blood pressure for at least 1 year after a spouse with Alzheimer's disease enters a nursing-care facility or dies.

  4. Agriculture

    Killer bees boost coffee yields

    Even self-pollinating coffee plants benefit substantially from visits by insect pollinators.

  5. Physics

    Twice-charmed particles spotted?

    Exotic cousins of protons and neutrons known as doubly-charmed baryons may have made their laboratory debut.

  6. Health & Medicine

    Hunger hormone gone awry?

    People with an inherited form of obesity caused by constant hunger pangs have higher-than-normal blood concentrations of ghrelin, a hormone believed to boost appetite.

  7. Health & Medicine

    Sex, smell and appetite

    A study of sexual dysfunction in mutated mice may help explain the connection between smell and appetite.

  8. Materials Science

    X Rays to Go: Carbon nanotubes could shrink machines

    A new type of X-ray machine operates at room temperature by producing X-ray-generating electrons with carbon nanotubes instead of traditional heated metal filaments.

  9. Earth

    Teenage Holdup: Pollution may delay puberty

    A new study of adolescents suggests that widespread environmental pollutants such as PCBs and dioxins may delay sexual development.

  10. Physics

    Heightened Resistance: Sharper shaft points to smaller bits

    Scientists have exploited a method for detecting the orientations of magnetic fields to achieve a remarkable leap in detector sensitivity.

  11. Health & Medicine

    His-and-Her Hunger Pangs: Gender affects the brain’s response to food

    Men's and women's brains react differently to hunger, as well as to satiation.

  12. The Eyes Have It: Newborns prefer faces with a direct gaze

    Only a few days after birth, babies already home in on faces that fix them with a direct gaze and devote less attention to faces with eyes that look to one side.

  13. Paleontology

    Into the Gap: Fossil find stands on its own four legs

    A fossil originally misidentified as an ancient fish turns out to be the nearly intact remains of a four-limbed creature that lived during an extended period noted for its lack of fossils of land animals.

  14. Humans

    Official Concern: U.N. weighs in on acrylamide toxicity

    A United Nations panel concluded that, in fried, grilled, and baked foods, the formation of acrylamide, a carcinogen and nerve poison in rodents, constitutes "a serious problem."

  15. Tough Tradeoff: Beetle brains show how sex shortens life

    Brain surgery in beetles reveals yet another way that having sex can shorten life.

  16. Aphids with Attitude

    A few aphid species that live socially in groups raise their own armies of teenage female clones.

  17. Physics

    Double or Nothing

    The hunt for a rare, hypothetical nuclear transformation known as neutrinoless double-beta decay may answer one of the most urgent questions in physics today: How much do elementary particles called neutrinos weigh?