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Your search has returned 28 articles:
  • News

    Volcanic Suppression: Major eruptions can reduce sea level

    Large volcanic eruptions can temporarily cool Earth's climate and, a team of scientists now suggests, lower sea level worldwide.

    The tiny particles of broken rock and droplets of condensed gases that a volcano ejects high into the atmosphere reflect sunlight into space. So, after an eruption, there's less radiation reaching Earth's surface to warm it, says John A. Church, an...

    11/02/2005 - 13:31 Earth
  • News

    Up to Snuff: Nanotube network fights flames

    Plastics readily burn. That's why their makers add fire-suppressing chemicals. But some of these additives have been shown to be harmful to animals and are being phased out. In an upcoming Nature Materials, researchers describe another way to smother plastic's fiery potential: Include a network of carbon nanotubes.

    Brominated fire retardants, which are in everything from computers to...

    11/02/2005 - 13:24 Materials
  • News

    Beyond Falsetto: Do mice sing at ultrasonic frequencies?

    Male mice may serenade prospective mates at pitches about two octaves higher than the shrillest sounds audible to people.

    This "mouse song" is comparable in complexity to the sequences of tones that songbirds and some whales make, say Timothy E. Holy and Zhongsheng Guo of Washington University in St. Louis.

    Other researchers remain guarded about labeling...

    11/02/2005 - 13:16 Animals
  • News

    Bad Readout from DNA: Genes that act on brain may promote dyslexia

    Four independent studies from the United States, Germany, and England implicate two genes in fostering dyslexia. The genes contribute to early brain development.

    Dyslexia, a learning disorder that afflicts at least 5 percent of elementary school children, is characterized by difficulties in perceiving sounds within words, spelling and reading problems, and troubles with written and oral...

    11/02/2005 - 12:56
  • News

    Light Pedaling: Photonic brakes are vital for circuits

    Just as optical fibers have replaced most electrical wires for long-distance telecommunications, light-based circuits may replace electrical ones in applications involving vast flows of data within computers and networks. Now, a team of industrial researchers has taken what may be a crucial step toward such photonic circuitry: They've found a way to dial down the speed of light within...

    11/02/2005 - 12:01 Physics