Vol. 160 No. #11
Archive Issues Modal Example

More Stories from the September 15, 2001 issue

  1. Astronomy

    X rays trace fierce stellar winds

    A high-resolution X-ray view of the Rosette nebula, a nearby star-forming region, has revealed for the first time that the stellar winds from massive stars heat surrounding gas to a scorching 6 million kelvins.

  2. Planetary Science

    Galileo finds spires on Callisto

    The sharpest images ever taken of Jupiter's icy moon Callisto show a group of features never seen before on the remote body—icy, knoblike spires that show signs of slow but steady erosion.

  3. Health & Medicine

    Placebos are dead, long live placebos

    A study provides new evidence for the placebo effect and suggests a mechanism through which placebos might benefit patients with Parkinson's disease.

  4. Health & Medicine

    Painkillers may damage hearts

    A retrospective study suggests that commonly used painkillers called COX-2 inhibitors may slightly increase a person's risk of having a heart attack.

  5. Embryo stem cells turned to blood

    Human embryonic stem cells may provide a new source of blood and bone marrow.

  6. Homing in on a longevity gene

    A gene on chromosome 4 may help people live to an old age.

  7. Brief diet alters gene activity

    Even a short-term diet may activate anti-aging genes.

  8. Earth

    Scientists spy sixth undersea-vent ecology

    A new group of hydrothermal vents found in the Indian Ocean are populated by communities of organisms that differ significantly from other such groups of vent systems.

  9. Anthropology

    Neandertals show ancient signs of caring

    A partial jaw unearthed in France indicates that Neandertals extensively cared for sick and infirm comrades beginning nearly 200,000 years ago.

  10. Earth

    Bt Corn Risk to Monarchs Is ‘Negligible’

    A much-anticipated report states that the most commonly planted forms of genetically engineered Bt corn pose only a "negligible" risk to monarch butterfly populations.

  11. Materials Science

    Speed demon gets hooked on silicon

    A method for coating silicon with high-performance semiconductors such as gallium arsenide may make faster, low-power microcircuits both cheaper and more widespread.

  12. Materials Science

    Materials use nitric oxide to kill bacteria

    A novel coating may offer a new way to fend off microbial buildup on catheters, artificial hips, and replacement cardiac valves.

  13. Ecosystems

    Fierce invader steals nests from a native fish

    The round goby, a Eurasian fish that has invaded the Great Lakes, is causing the decline of the mottled sculpin by displacing the native from its spawning sites.

  14. Health & Medicine

    Two drugs may enhance recovery from stroke

    Two drugs, levodopa and dextroamphetamine, may help stroke patients to recover the ability to move and speak.

  15. Earth

    Dusty workplace may cause change of heart

    Occupational exposure to fine dust can trigger adverse changes in the hearts of even strong, healthy workers.

  16. Animals

    Social Cats

    Who says cats aren't social? And other musings from scientists who study cats in groups.

  17. Earth

    Life on the Edge

    Will a mass extinction usher in a world of weeds and pests?