Vol. 162 No. #3
Archive Issues Modal Example

More Stories from the July 20, 2002 issue

  1. Health & Medicine

    Melanoma gene quickly reeled in

    Biologists have discovered a gene that may contribute to many cases of deadly skin cancer.

  2. Tech

    Software bugs cost big bucks

    An epidemic of software errors in industrial computer programs is costing the United States $60 billion per year.

  3. Health & Medicine

    Method could boost diabetes therapy

    Allowing insulin-producing islets to grow in close contact with each other during cell culture may increase the chance of successful transplant into diabetic people.

  4. Earth

    Study links cancer to Vatican Radio

    Broadcast transmissions from a forest of antennas owned by Vatican Radio, outside Rome, appear to have boosted leukemia incidence in neighboring communities.

  5. Physics

    Paper planes get laser liftoff

    Powering aircraft by remote lasers works—at least on paper.

  6. Health & Medicine

    Study fails to link vasectomy to cancer

    Researchers have found that men with prostate cancer are no more likely to have had a vasectomy than healthy men are.

  7. Health & Medicine

    Antioxidants for greyhounds? Not a good bet

    Antioxidant vitamins that greyhound racers have been giving their animals to boost performance actually slow down the dogs.

  8. Health & Medicine

    Gender differences in weight loss

    Men and women gain weight differently and may lose it differently, too.

  9. Paleontology

    Skimming the Surface: Flying reptile may have scooped its meals

    Fossils unearthed in Brazil strengthen the idea that some species of ancient flying reptiles snatched their meals on the fly, snapping up fish as they swooped low over the water's surface.

  10. Health & Medicine

    Disabled Defense: HIV protein counters immune-cell gene

    Immune cells contain a protein that can inhibit HIV replication if the AIDS virus lacks a key protein.

  11. Health & Medicine

    More than Skin Deep? Beauty products may damage fetal development

    A new report shows that many cosmetics contain phthalates—a class of chemicals known to cause developmental deformities in animals.

  12. Health & Medicine

    Mixed Blessing: Unusual gene helps heart, hurts immunity

    People carrying a variant of a gene that encodes an immune protein called toll-like receptor 4 have a weaker defense against infections but appear to be less prone to heart disease.

  13. Physics

    Heavy Suspicion: Elemental discoveries trace to fake data

    A prominent physicist has lost his job following allegations that he fabricated the evidence underpinning his team's now-discredited discovery of elements 116 and 118.

  14. Health & Medicine

    Sleepy Heads: Low fuel may drive brain’s need to sleep

    A new study supports the hypothesis that dwindling energy stores in the waking brain induce sleep.

  15. Archaeology

    The Original Cocoa Treat: Chemistry pushes back first use of the drink

    Analysis of residues from ancient Maya vessels has revealed that the pots held cocoa almost 1,000 years before its previously known earliest use.

  16. Astronomy

    Dying star illuminates its own shroud

    Images of a planetary nebula, taken by the Hubble Space Telescope in 1997 but only recently assembled as a color composite, show a shroud of material cast off and ionized by the dying, sunlike star Henize 3-401.

  17. Health & Medicine

    A Rash of Kisses

    A kiss can trigger allergic reactions.

  18. Earth

    Crisis on Tap?

    Because people are becoming ever more dependent on underground aquifers as sources of water, scientists are striving to understand better how groundwater systems interact with the water that flows across Earth's surface.