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Your search has returned 17 articles:
  • News

    The Little Chill: Tiny wind generator to cool microchip hot spots

    Technologists cramming more and more transistors onto microchips face a common problem: too much heat. To make computers chill, manufacturers typically outfit hot chips with heat sinks, whose fins release heat into a stream of air.

    Now, a team of university and industrial engineers has created a prototype, microscale air pump that they say could be fabricated with the techniques used to...

    11/08/2006 - 12:10 Technology
  • News

    Birds Beware: Several veterinary drugs may kill scavengers

    Scavenging birds worldwide could be at risk of accidental poisoning from carcasses of livestock that farmers had dosed with certain anti-inflammatory drugs, according to a survey of veterinarian records.

    The work grows out of discoveries in the past 2 years that several Gyps vulture species have almost vanished from India and Pakistan because residues of the anti-...

    11/08/2006 - 11:46
  • News

    New eye on the sun

    Why is the sun's outer atmosphere so much hotter than the star's roiling interior? Astronomers hope that the recently launched Hinode spacecraft, which has begun staring at the sun with a trio of telescopes, will help solve that puzzle.

    Images taken during the testing phase of the Hinode mission, a Japanese-British–U.S. collaboration, have examined...

    11/08/2006 - 11:20 Astronomy
  • News

    Hot, Hot, Hot: Peppers and spiders reach same pain receptor

    The burn of hot peppers and the searing pain of a spider bite may have a common cause. New research suggests that molecules in hot peppers and in a certain spider's venom target the same receptor on nerve cells.

    Several years ago, scientists identified a channel on neurons that's opened by capsaicin, the molecule responsible for peppers' burn. Follow-up research showed that this channel...

    11/08/2006 - 11:02
  • News

    See How They See: Immature cells boost vision in night-blind mice

    Transplanted retinal cells can restore some vision in mice with degenerative eye disease, experiments show. The new findings could point the way toward treatments for several forms of progressive blindness, including macular degeneration, which affects an estimated 6 million people nationwide.

    For years, researchers have aimed to transplant stem cells to replace light-...

    11/08/2006 - 10:29 Biomedicine
  • News

    Sick and Tired: Tracking paths to chronic fatigue

    Stressful experiences and a genetic predisposition toward emotional turmoil contribute to some cases of chronic fatigue syndrome, two new studies indicate.

    The investigations, published in the November Archives of General Psychiatry, add to growing evidence that several varieties of chronic fatigue syndrome (CFS) occur, each with distinct causes.

    CFS affects roughly 800,000 people...

    11/08/2006 - 10:11
  • News

    Not So Clean: Service industries emit greenhouse gases too

    In recent decades, a large part of the U.S. economy has shifted to providing services rather than manufacturing products. Despite the presumption that the change bodes well for the environment, service industries such as the retail trade are creating just as much planet-warming carbon dioxide as the manufacture and operation of motor vehicles do, a new analysis suggests.


    11/08/2006 - 09:41 Earth & Environment
  • News

    Malaria Reversal: Drug regains potency in African nation

    An inexpensive drug that has lost much of its punch against malaria over the past 20 years is showing signs of regaining its strength in the African nation of Malawi. But researchers warn that the entire continent would have to coordinate its fight against the disease in order for the drug to regain a prominent place among malaria fighters.

    Doctors have used the drug,...

    11/08/2006 - 08:57 Biomedicine
  • News

    Early tetrapod likely ate on shore

    From Ottawa, at a meeting of the Society of Vertebrate Paleontology

    The skull structure of Acanthostega, a semiaquatic creature that lived about 365 million years ago, suggests that although the creature spent most of its time in the water, it fed on shore or in the shallows rather than in deep water.

    Molly J. Markey, a paleontologist at Harvard University, examined the pattern of...

    11/07/2006 - 09:58 Paleontology
  • News

    Society sans frills

    From Ottawa, at a meeting of the Society of Vertebrate Paleontology

    Past studies suggest that horned dinosaurs such as Triceratops and their relatives, a group known as ceratopsians, lived in herds and used the frills on their skulls and other ornamentations to identify members of their own species, as did many other dinosaurs (SN: 8/13/05, p. 103: Available to subscribers at Just for...

    11/07/2006 - 09:43 Paleontology