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Your search has returned 105 articles:
  • Science & the Public

    Growth-promoting antibiotics: On the way out?

    In 1950, Science News ran a story showing for the first time that a potent antibiotic could do more than knock out disease. New animal experiments, we reported, “cast the antibiotic in a spectacular new role” as a livestock growth promoter. Lacing the food of hogs with trace quantities of this drug increased meat yields by up to 50 percent, scientists at Lederle Laboratories had reported at a...

    03/23/2012 - 13:30 Humans & Society, Nutrition, Earth & Environment, Biomedicine, Agriculture
  • Math Trek

    Winning the World Series with math

    To run the bases faster, baseball players just need a bit of mathematics, according to research by an undergraduate math major and his professors. Their calculations show that the optimal path around the bases is one that perhaps no major-league ball player has ever run: It swings out a full 18.5 feet from the baseline.

    The precise path the researchers calculated probably won’t...

    10/22/2010 - 15:10
  • Science & the Public

    How resveratrol (in grapes, peanuts and wine) fights fat and disease

    Resveratrol, a constituent of grapes, peanuts and certain other plants, can fight the proliferation of fat cells and improve the uptake of sugar from the blood, a pair of new studies show. Their findings suggest mechanisms to explain why grape products, including wine, have developed a reputation as heart healthy, obesity-fighting and beneficial for people developing diabetes.

    The...

    06/23/2010 - 22:21 Biomedicine, Nutrition, Humans & Society
  • Food for Thought

    No Peanuts for Your Peanut

    Peanuts are a protein-rich snack food packing plenty of vitamins and trace nutrients. However, these legumes can elicit potentially life-threatening immune reactions within the one in 100 American adults who are allergic to them. Rates of peanut allergy are even higher among children. And the really disturbing news: A new study finds that the age at which this common food allergy first shows...

    12/11/2007 - 08:49 Nutrition
  • News

    Drug Overflow: Pharmaceutical factories foul waters in India

    Pharmaceuticals ranging from painkillers to synthetic estrogens can harm aquatic life when they enter waterways through human excreta, hospital and household waste, and agricultural runoff. Now, researchers have shown that there's another way for such drugs to get into the environment: A treatment plant in India that processes wastewater from pharmaceutical manufacturers discharges highly...

    08/08/2007 - 16:25 Earth & Environment
  • Feature

    Taken for a Spin

    To illustrate the amazing properties of spider silk, Nikola Kojic offers an arresting example. Imagine a circular web with a diameter of 100 meters—about the length of a football field—spun from a silk thread about a centimeter thick. Concentric circles 4 cm apart attach to the web's spokes, also 4 cm apart. This larger-than-life web "could stop a jumbo jet in midflight," says Kojic.

    ...

    04/10/2007 - 10:34 Materials
  • News

    New solutions for unused drugs

    A dilute stream of prescription drugs flows through the nation's rivers. To help cut that flow, representatives of the federal government and a pharmacists' trade group want consumers to stop flushing most old drugs down the toilet.

    Some 3 to 7 percent of dispensed medicines go unused, according to estimates by the Pharmaceutical Research and Manufacturers of America in...

    04/03/2007 - 18:21 Earth & Environment
  • News

    Mafia Cowbirds: Do they muscle birds that don't play ball?

    Cowbirds in Illinois that sneak their eggs into other birds' nests retaliate violently if their scam gets foiled, researchers say.

    The brown-headed cowbirds of North America outsource nest building and chick raising. Female cowbirds dart into other birds' nests, quickly lay eggs, and rush away. The nest owners are left to care for big, demanding cowbird chicks.

    ...
    03/07/2007 - 11:56 Animals
  • News

    Putting the kibosh on black cohosh

    The herbal supplement black cohosh, taken for relief of menopausal hot flashes, doesn't work any better than a placebo, a study finds.

    Previous research had brought mixed results. Nevertheless, sales of black cohosh have soared as women have turned away from estrogen-replacement therapy, which has been linked with an increased risk of stroke (SN: 4/15/06, p. 228: Available to...

    01/09/2007 - 13:36 Biomedicine
  • Feature

    What a Flake

    With a camera-equipped microscope of his own making, Kenneth G. Libbrecht shoots some of the world's most stunning photographs of snowflakes. Since October, four of the physicist's images have adorned U.S. postage stamps. Each stamp displays an exquisitely intricate, burst-shaped crystal that, because of the photographer's distinctive lighting, glows like polished metal.

    ...
    12/18/2006 - 16:50 Computing