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Your search has returned 18 articles:
  • 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
  • Food for Thought

    Juice May Slow Prostate Cancer Growth (with recipe)

    Prostate cancer will claim the lives of an estimated 30,000 men in the United States this year. The second leading cause of cancer death in men, its incidence climbs with age. In Western countries, the disease is reaching nearly epidemic proportions among the elderly. However, the cancer can grow so slowly that many men with prostate cancer will die of something else first.

    ...
    08/10/2006 - 13:46 Nutrition
  • News

    Two drugs are equal in preventing breast cancer

    A commonly prescribed anti-osteoporosis drug works as well at preventing breast cancer in postmenopausal women as the sole drug currently prescribed for the task, a head-to-head trial shows.

    Scientists designed the study to compare oral doses of the osteoporosis drug raloxifene (Evista) with tamoxifen (Nolvadex) taken for 5 years. Roughly half of the nearly 20,000 women received...

    05/02/2006 - 11:15 Biomedicine
  • News

    Leaden streets

    From San Diego, at a meeting of the Society of Toxicology

    When Arlene L. Weiss and her colleagues found that urban house dust tends to contain more lead the closer it is to a frequently opened window, they reasoned that most of the heavy metal arrives from outside. Their new survey now confirms that street grit is the probable source of lead in urban homes and that flaking paint from...

    03/21/2006 - 11:06 Earth & Environment
  • News

    Dairy fats cut colon cancer risk

    A diet high in dairy products dramatically reduces the risk of colon cancer, the third most lethal type of cancer, a Swedish study finds. The catch: To have the effect, these foods must be rich in fat, the component that nutritionists have been trying to pull out of whole milk and other foods for years.

    Previous studies of the protective effect of dairy foods against colon cancer had...

    11/14/2005 - 14:09 Nutrition
  • Food for Thought

    Leaden Chocolates

    Here's something that might give you pause after Halloween: Chocolates are among the more lead-contaminated foods. A new study has probed the source of chocolate's lead and concludes it's not the cocoa bean. Its concentrations of the toxic metal were among the lowest recorded for any foodstuff.

    The issue of lead-tainted chocolates is hardly new. Indeed, it was the...

    11/03/2005 - 16:10 Nutrition
  • News

    Champion of strength is forged in mighty anvil

    A newly created form of carbon has captured the crown of world's strongest known material. A team of researchers in Germany and France made the new material using a specialized, multijawed anvil that simultaneously squeezed and heated a powder of all-carbon molecules known as buckyballs.

    At 200,000 times atmospheric pressure and a temperature of 2,500 kelvins, the powder...

    09/13/2005 - 12:18 Physics
  • Feature

    Armor-Plated Puzzle

    A few years after Francis H. Crick and James D. Watson unveiled the structure of DNA in 1953, they rocked the fledgling field of molecular biology again with a bold notion: Viruses are, in part, structured as crystals are. That idea captivated Donald L.D. Caspar and Aaron Klug, who then systematically applied what they knew about crystal geometry to classify and predict the structures that...

    08/29/2005 - 10:49 Numbers
  • Food for Thought

    Coming Soon—Broccoli and Peach 'Seaweeds'

    Sushi aficionados recognize the shiny, green, paperlike material that's wrapped around bite-sized morsels as nori, a product made of dried seaweed. Over the past 2 years, California researchers have been developing nori alternatives based on a host of terrestrial sources—ones that range from carrots and peaches to broccoli.

    These new thin vegetable and fruit films can be...

    08/02/2005 - 15:16 Nutrition
  • News

    Tapping Tiny Pores: Nanovalves control chemical releases

    Cells readily manufacture the nanoscale valves, pumps, and other gadgets that make life work. For human researchers, fabricating devices in the nanometer range is anything but easy.

    That didn't stop chemist Thoi D. Nguyen and his colleagues at the University of California, Los Angeles (UCLA) from building arrays of nanovalves, each made from a single molecule. If used to control minute...

    07/20/2005 - 11:42 Technology