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Your search has returned 18 articles:
  • News

    Newton's Dusty Mirror: Old experiment inspires ultrafast imaging

    Occasionally, science museums can stimulate new science. Inspired by an exhibit on an optical experiment performed by Isaac Newton, physicists have taken the first X-ray snapshot of a microscopic explosion.

    Physicists Henry Chapman and Saa Bajt took their daughter to the Chabot Space and Science Center in Oakland, Calif., in 2005. There, they saw a replica of an experiment...

    08/08/2007 - 16:48 Physics
  • News

    Bad News, Good News: ADHD-risk gene has silver lining

    A gene variant that increases the risk for attention-deficit hyperactivity disorder also appears to help children grow out of the worst of their behavioral problems as certain brain structures normalize, new research suggests.

    "It looks like a double-edged sword," Philip Shaw says of the gene variant. Shaw led the work at the National Institute of Mental Health in Bethesda,...

    08/08/2007 - 16:36
  • 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
  • News

    Nerve Link: Alzheimer's suspect shows up in glaucoma

    A protein fragment that litters the brains of people with Alzheimer's disease may also bear responsibility for some of the vision loss in glaucoma, a new study in rats shows.

    Glaucoma patients typically have abnormal fluid pressure within the eye, but it remains unknown how this stress kills the nerve cells at the back of the retina. While there is no cure for glaucoma,...

    08/08/2007 - 16:11 Biomedicine
  • News

    Bad for Baby: New risks found for plastic constituent

    Two animal studies demonstrate that early exposure to a chemical known to leach from baby bottles, the linings of food cans, and other plastic items can trigger illness and even changes in genetic expression. A building block of polycarbonate plastics, bisphenol A (BPA) ends up in food, people, and the environment.

    In one of the new studies, the pollutant permanently reprogrammed a gene...

    08/08/2007 - 15:57 Earth & Environment
  • News

    Ferrets Gone Wild: Reintroduced animals coming back in Wyoming

    The first wild population of endangered black-footed ferrets that started from captive-bred animals, once feared to have died out, has survived and is growing, researchers say.

    The latest survey, from 2006, reports nearly 200 ferrets in Wyoming's Shirley Basin, says Martin Grenier of the University of Wyoming in Laramie. They descend from animals released there between 1991...

    08/08/2007 - 14:21 Animals
  • News

    Skeletal Discovery: Bone cells affect metabolism

    If your blood glucose is out of whack, the problem may be in your bones. New research in mice shows that bone cells exert a surprising influence on how the body regulates sugar, energy, and fat.

    The discovery could lead to new ways to treat type 2 diabetes, a disease involving poor regulation of blood glucose. It also means that skeletons act as endocrine organs, which...

    08/08/2007 - 14:04 Biomedicine
  • News

    Serotonin lower in shift workers

    Workers who rotate between day and night shifts are at high risk for sleep and mood disorders. New research highlights a possible biological explanation—lower amounts of the key brain chemical serotonin.

    Serotonin helps regulate the brain's circadian cycle and also plays a large role in mood. Antidepressants such as fluoxetine (Prozac) and sertraline (Zoloft) increase production of...

    08/08/2007 - 12:08 Biomedicine
  • News

    Beware summer radon-test results

    Measuring radon with testing kits that sit in a house for just a few days can yield misleadingly low values in summer, a new study finds.

    Alabama maintains a statewide database of 36,000 domestic measurements of radon, a radioactive gas emitted by rocks in soil. Although these data revealed some geographical hot spots, radon readings in such areas were often unexpectedly low if testing...

    08/08/2007 - 11:51 Earth & Environment
  • News

    Veiled black holes

    Lurking at the centers of many galaxies, supermassive black holes make their presence known by gobbling gas, which heats up to fuel quasars and other fireworks. These so-called active galactic nuclei (AGN) are among the most luminous objects in the universe. Now astronomers say that they've found a new, relatively common class of AGN, so heavily smothered by gas and dust that virtually none...

    08/08/2007 - 11:17 Astronomy