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Your search has returned 18 articles:
  • News

    Bumblebee 007: Bees can spy on others' flower choices

    In a novel test of insect intel, researchers observed that bumblebees, which had spied on a worker bee from another colony feasting on unusual flowers, later tended to visit flowers of the same color.

    This talent amounts to social learning, which is picking up a new behavior from observations of another animal, say the test's designers, Bradley D. Worden and Daniel R. Papaj...

    08/31/2005 - 11:46 Animals
  • News

    A New Role for Statin Drugs? Cholesterol fighters may reduce deaths soon after heart attacks

    People brought to a hospital in the throes of a heart attack are more likely to survive if they receive a statin drug, a new study finds. The report could pave the way for a trial to ascertain whether doctors should routinely use the cholesterol-lowering agents to stabilize these heart patients.

    Guidelines for physicians recommend prescribing statins to hospitalized heart attack...

    08/31/2005 - 11:26 Biomedicine
  • News

    Wings warp for birdlike agility

    Taking cues from seagulls, a bird-size prototype aircraft morphs its wings to navigate cluttered environments. The ability to shift its wings between an M shape for cruising and landing and a W shape for dives and turns bodes well for tasks in tight spots, from tracking wildlife in canyons to spying on an urban enemy, says Mujahid Abdulrahim of the University of Florida in Gainesville.

    ...
    08/31/2005 - 10:51 Technology
  • News

    Class Acts from New Pesticides: Chemicals have little effect on mammals

    Insects, be warned. Research on three continents has turned up two new classes of selective pesticides that immobilize and eventually kill many insect species by interfering with a cell receptor unique to the insects. The novel chemicals could potentially prevent infestations of crops while posing minimal danger to noninsects.

    "Both classes of chemicals act at the ryanodine receptor,"...

    08/31/2005 - 10:27 Chemistry
  • News

    Fog Be Gone: Nanocoating clarifies the view

    A new coating that prevents fogging and reflection could one day clear the world of misty mirrors, glaring glasses, and cloudy camera lenses. Researchers described their innovation, which relies on porous layers of nanoscale particles, at the American Chemical Society's meeting this week in Washington, D.C.

    Fogging occurs when water droplets from moist air condense on a cool...

    08/31/2005 - 10:09 Materials
  • News

    Recipe for a Heavyweight: Making a massive star

    Astronomers have a good idea of how small stars such as our sun form. First, a spinning gas cloud collapses to become a dense core surrounded by a flattened disk of gas and dust. Matter from the disk then falls onto the central body, which becomes massive and dense enough to ignite nuclear reactions. As most of this material careens inward, some of it also spews outward in a pair of jets....

    08/31/2005 - 09:39 Astronomy
  • News

    Olives Alive: Extra-virgin oil has anti-inflammatory properties

    Besides taste, scientists now offer another reason why people should drizzle their food with extra-virgin olive oil. A chemical analysis suggests that a molecule isolated from this grade of oil, which comes from the first pressing of the fruit, has anti-inflammatory effects similar to those of ibuprofen. The finding may explain some of the health benefits associated with the Mediterranean...

    08/31/2005 - 09:22
  • News

    Chimps to People: Apes show contrasts in genetic makeup

    Despite sharing much of their genetic identity with people, chimpanzees exhibit previously unappreciated DNA distinctions, according to the first rigorous comparisons of the two species' complete genetic sequences.

    The new research "dramatically narrows the search for the key biological differences between the species," says geneticist Robert Waterston of the University of...

    08/31/2005 - 08:42 Anthropology
  • Letters to the Editor

    Letters from the September 3, 2005, issue of Science News

    Pick of the crop

    "Honey, We Shrank the Snow Lotus: Picking big plants reduces species' height" (SN: 7/9/05, p. 20) suggests that the change is an evolutionary process. However, this and the other examples given are all more selective breeding than natural selection. In this case, organisms with undesirable characteristics (smaller size) are overrepresented during reproduction as the result of...

    08/30/2005 - 15:57 Humans & Society
  • News

    Movies put smoking in a bad light

    Smokers in U.S. movies are more likely to be villainous or poor than heroic or wealthy, according to a study in the August Chest.

    Karan Omidvari, a physician at St. Michael's Medical Center in Newark, N.J., and his colleagues recorded the smoking habits of the five main characters in each of 447 movies made during the 1990s, including such hits as Independence Day and There's Something...

    08/30/2005 - 13:13 Humans & Society