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Your search has returned 22 articles:
  • Feature

    Back from the Dead?

    In December 1938, Marjorie Courtney-Latimer, curator of a natural history museum in East London, South Africa, went to the docks to look for interesting specimens among the day's catch. What she found one day she later described as "the most beautiful fish I had ever seen ... a pale mauve blue with iridescent silver markings." The discovery sent scientists into a frenzy.

    ...

    11/13/2007 - 11:15 Paleontology
  • 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
  • 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 Other
  • News

    Dawn Sneaks: Old birds sing early, cuckold sleepyheads

    Among European birds called blue tits, the early bird gets more than a worm.

    Older males start singing some 5 or 6 minutes earlier in the dawn chorus and attract more of the promiscuous females than younger males do, researchers report in the September issue of Animal Behaviour.

    In Europe, the springtime dawn chorus includes the voices of male blue tits (Cyanistes...

    07/05/2006 - 09:57 Animals
  • 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
  • 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
  • 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
  • News

    Quick Fix: How invasive seaweed repairs its wounds

    Rapid self-healing is critical to the invasiveness of an alien green alga that's currently wreaking havoc in the Mediterranean Sea. Now, scientists have discerned the chemistry underlying this highly efficient repair process. That understanding may provide ideas for thwarting the seaweed's relentless spread.

    Frequently referred to as the "killer alga," Caulerpa taxifolia is a...

    03/30/2005 - 13:52 Ecology