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Your search has returned 9 articles:
  • News

    Gene dispensers

    From Chicago, at the American Chemical Society Meeting

    Researchers have developed a new means for transferring genes to treat diseases. The gene therapy method relies on a nanoscale architecture with many alternating layers of polyester and DNA. Once this material is inside the body, water degrades the polyester layer by layer, for a slow, controlled release of genetic material to...

    04/10/2007 - 15:16 Chemistry
  • 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
  • Food for Thought

    Carcinogens in the Diet

    It's official. The federal government now has added agents commonly found in overcooked meat to the list of potential cancer causers.

    On Jan. 31, the National Toxicology Program (NTP), part of the National Institutes of Health, published its latest update of materials known to cause cancer in people and others that are "reasonably anticipated" to do so. Among the 246 agents on...

    02/14/2005 - 17:21 Nutrition
  • News

    Lemon-scented products spawn pollutants

    While prepping for holiday guests, many hosts will deploy cleaners and air fresheners that impart a pleasant lemon or pine scent. Though they can mask stale smells, their fragrant ingredients—under certain conditions—may also be a rich source of indoor pollution, a study finds.

    Several years ago, Charles J. Weschler, a chemist at Telcordia Technologies in Red Bank, N.J., stumbled onto...

    10/27/2004 - 13:51 Earth & Environment
  • News

    Slimmer Ticks, Less Disease: Tick-semen protein is potential vaccine

    Pregnant ticks gain a lot of weight. In fact, after females mate and as they feed on a host's blood, they quickly grow to about 100 times their original size.

    Researchers have long suspected that the semen of male ticks contains a protein that causes this weight gain. Reuben Kaufman of the University of Alberta in Edmonton and his colleagues have now isolated such a protein,...

    04/14/2004 - 10:38 Biomedicine
  • News

    Deepest Vision Yet: Hubble takes ultralong look at the cosmos

    Astronomers this week unveiled the deepest visible-light portrait of the universe ever made. Compiled by the Hubble Space Telescope as it stared into a narrow corridor of space more than 13 billon light-years long, the mosaic of images also includes infrared pictures of what appear to be the most distant objects detected so far.

    Dubbed the Hubble Ultra Deep Field (UDF),...

    03/10/2004 - 10:27 Astronomy
  • Food for Thought

    Leaden Gardens

    Soils in many cities of the United States carry a poisonous legacy: heavy concentrations of lead. The metal was deposited for years as fallout from flaking leaded house paint and the emissions of cars burning leaded gasoline. Recognizing the threat posed by tainted soil, environmental scientists have warned that growing edible plants in soils near streets or within several feet of homes and...

    12/04/2003 - 17:26 Earth & Environment
  • News

    UV-pollutant combo hits tadpoles hard

    From New Orleans, at the e.hormone 2003 Conference

    Many of the studies documenting a global decline in amphibians have linked the shrinking populations with exposure to excessive ultraviolet (UV) sunlight or to pollutants, especially ones with a hormonal effect. Biologists now find that slightly elevated UV exposure reduces the chance that tadpoles will become frogs. That chance...

    11/05/2003 - 09:35 Earth & Environment
  • News

    POPs treaty enacted

    On Oct. 23, a new international treaty–the Protocol on Persistent Organic Pollutants (POPs)–went into effect, although the United States hasn't signed on. Brokered under the aegis of the United Nations, the POPs treaty calls for reduction or elimination of toxic chemicals that are long-lived and have the propensity to travel long distances.

    When first drafted in 2000, this treaty looked...

    11/05/2003 - 06:27 Earth & Environment