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Your search has returned 156 articles:
  • News

    Obesity messes with the brain

    Obesity subtly diminishes memory and other features of thinking and reasoning even among seemingly healthy people, an international team of scientists reports. At least some of these impairments appear reversible through weight loss. Researchers also report one likely mechanism for those cognitive deficits: damage to the wiring that links the brain’s information-processing regions.

    A...

    03/25/2011 - 12:00 Nutrition, Body & Brain
  • Science & the Public

    BPA: On the way out? Sort of

    I ran across a Chicago Trib story noting that the city council voted yesterday to make the Windy City America’s first community to ban sales of polycarbonate-plastic baby bottles and “sippy” cups. A lofty claim, but every town and hamlet in Minnesota is actually slated to beat Chicago by 30 days.

    Indeed, five days before Chicago did, Minnesota declared it was outlawing baby beverage-...

    05/14/2009 - 18:31 Body & Brain, Chemistry, Earth & Environment, Nutrition, Humans & Society, Technology
  • 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

    Smells Funny: Fish schools break up over body odor

    Just an hour's swim in water lightly contaminated with a common pollutant can turn fish into rejects with an odor that causes their untainted schoolmates to shun them, researchers say.

    In a lab test, brief exposure to 4-nonylphenol (4-NP), a surfactant used in many soaps, detergents, and other products, disrupted the normal tendency of banded killifish (Fundulus diaphanus) to...

    10/24/2007 - 10:35 Animals
  • News

    Spying Vision Cells: Eye's motion detectors are finally found

    The eye's retina does more than register images the way film or a digital camera detector does. To allow it to begin analyzing an image, the retina has specialized nerve cells that respond to motion or other important features in the image detected by the light-sensing rod and cone cells.

    Scientists discovered the specialized cells that sense motion in the retinas of cats and other...

    10/10/2007 - 15:30
  • News

    Tea compound aids dying brain cells

    From Washington, D.C., at the Fourth International Scientific Symposium on Tea and Human Health

    A constituent of green tea can revive moribund brain cells, Israeli researchers report. The team experimented with animal neurons that had been chemically poisoned to model the death of dopamine-producing cells in Parkinson's disease.

    In a test-tube study, low doses of epigallocatechin...

    09/26/2007 - 12:04 Biomedicine
  • News

    Role Change: Mast cells show an anti-inflammatory side

    As anyone who has reacted to poison ivy can attest, the plant can induce maddeningly itchy skin. Researchers have now found that a cell once thought to be one of the chief perpetrators of this immune overreaction may actually keep the reaction from getting out of hand.

    Mast cells make proteins that contribute to the inflammation that characterizes allergic reactions. The cells...

    09/05/2007 - 09:17
  • 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

    Slimming on oolong

    Without skimping on portions, rats eating diets including oolong tea gain less weight than those dining teafree, a new study finds. The tea apparently impairs the body's ability to absorb fat.

    The finding supports a weight-control strategy—oolong consumption—advocated by practitioners of traditional Chinese medicine, note Lauren E. Budd and her colleagues at the University of California...

    05/15/2007 - 15:09 Nutrition
  • News

    New solutions for unused drugs

    A dilute stream of prescription drugs flows through the nation's rivers. To help cut that flow, representatives of the federal government and a pharmacists' trade group want consumers to stop flushing most old drugs down the toilet.

    Some 3 to 7 percent of dispensed medicines go unused, according to estimates by the Pharmaceutical Research and Manufacturers of America in...

    04/03/2007 - 18:21 Earth & Environment