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Your search has returned 11 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...

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

    Social jet lag: Need a smoke?

    From Munich, at the Euroscience Open Forum meeting

    People who have a hard time waking in the morning because their bodies' internal clocks are out of sync with their sleep schedules are said to have "social jet lag." Researchers in Europe have determined that the phenomenon strongly correlates with smoking.

    Battling one's biological clock can leave people weary in the same way as...

    08/01/2006 - 12:19
  • Food for Thought

    Protozoa Aid Food-Poisoning Germs

    Seemingly innocent microorganisms may have harmful consequences: Ubiquitous waterborne protozoa appear capable of aiding the survival of several types of bacteria responsible for gut-wrenching food poisoning.

    Maria T. Brandl and her colleagues focused on protozoa known as Tetrahymena after finding copious quantities of these renowned bacteria eaters...

    03/15/2006 - 17:06 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
  • News

    Feds pull approval of poultry antibiotic

    The Food and Drug Administration is about to prohibit poultry farmers from treating chickens and turkeys with the antibiotic enrofloxacin. Use of the antibiotic, whose trade name is Baytril, is leading to the emergence of microbes in the birds' meat that resist several antibiotics used to treat food poisoning in people, the agency says.

    On the market for 9 years, the drug has become...

    08/09/2005 - 11:14 Agriculture
  • News

    Cancer Switch: Good gene is shut off in various malignancies

    A gene called Reprimo is shut down in several cancers but rarely in healthy cells, a new study shows. This finding suggests that the gene's normal action would somehow inhibit these cancers. What's more, Reprimo is stalled in some precancerous growths, indicating that its silencing might occur in the early stages of cancer, says Adi F. Gazdar, a pathologist at the University of Texas-...

    07/13/2005 - 10:18 Biomedicine
  • Feature

    Do Antibodies Pack a Deadly Punch?

    Ask most people what antibodies do, and they'll respond that these immune agents kill bacteria, viruses, and other harmful microbes that seek to infect the body. An immunologist standing nearby would probably correct that answer by pointing out that antibodies don't actually do the dirty work.

    According to mainstream immunology, these Y-shaped proteins merely bind to bits of...

    06/18/2004 - 17:22
  • News

    AIDS Vaccine Tests Well in Monkeys

    With the help of two proteins that enhance the immune system's response to infection, an experimental AIDS vaccine has kept rhesus monkeys healthy for more than 4 months after they were exposed to a virus that causes acquired immune deficiency syndrome.

    The monkeys still became infected with the virus, which in this case was a fusion of simian and human immunodeficiency viruses (SIV and...

    03/16/2004 - 13:07 Biomedicine
  • News

    Do Arctic diets protect prostates?

    Prostate cancer's prevalence and its increase with age tend to be consistent from country to country. A new study finds one major exception to this cancer's high prevalence in older men: Arctic Inuit populations.

    Assessments of cancer in Inuit groups in Alaska, Canada, and Greenland had hinted that prostate cancer's incidence among the Inuit is unusually low. To rule out the possibility...

    10/13/2003 - 19:57 Nutrition
  • News

    Tobacco treaty penned

    Every day, people around the world light up some 15 billion cigarettes. This addiction to tobacco has reached epidemic proportions, according to the World Health Organization in Geneva. In hopes of curbing the escalating health and economic toll associated with tobacco use, negotiators from around the world drafted a tobacco treaty in May at the 56th World Health Assembly. On June 16, the...

    07/01/2003 - 20:02 Humans & Society