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Your search has returned 14 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
  • News

    More Than an Annoyance: Breathlessness could be sign of bigger problems

    Everyone runs out of breath from physical exertion. But for people with a condition called dyspnea, even a minor effort makes breathing difficult. A new study suggests that these people are at greater risk of dying of heart problems or other ailments than are people who have chest tightness, a well-known sign of cardiac trouble.

    Beginning in 1991, a team led by cardiologist Daniel S....

    11/02/2005 - 10:40 Biomedicine
  • News

    New Partners: Hubble finds more moons around Pluto

    Already deemed the oddball among planets, Pluto just got a new wrinkle. Two, actually. This week, astronomers announced that the Hubble Space Telescope has spied a pair of previously unrecognized moons orbiting Pluto, giving this outer solar system body a total of three satellites. If the finding is confirmed, Pluto will be the only object beyond Neptune known to have more than one moon. About...

    11/02/2005 - 10:15 Planetary Science
  • Letters to the Editor

    Letters from the November 5, 2005, issue of Science News

    Wind or fury?

    ("The Wind and the Fury" (SN: 9/17/05, p. 184) states, "In 2004, Florida suffered its worst hurricane season in 118 years, with nine hurricanes, five of which were classified as major." While it's true that 9 of the 15 named tropical or subtropical storms that formed in the North Atlantic basin last year strengthened into hurricanes, 6 of them actually became major hurricanes and...

    11/01/2005 - 16:18 Humans & Society
  • News

    Dopamine gene ups schizophrenia risk

    The chances of developing schizophrenia rise substantially for the small number of children who possess only one copy of a gene variant that regulates a crucial chemical messenger in the brain, according to a new finding of a long-term investigation.

    A team led by psychiatrist Allan L. Reiss of Stanford University School of Medicine studied 24 children missing a small piece of DNA on...

    11/01/2005 - 15:01
  • News

    Breath test could detect bad microbe

    Scientists in New Zealand have devised a breath test for detecting a fungal lung infection. Using gas chromatography and mass spectroscopy, the team detected a substance called 2-pentylfuran in the breath of people infected with Aspergillus fumigatus but not in people presumed to be free of infection.

    The achievement stands as the first example of using people's breath to detect an...

    11/01/2005 - 14:55 Biomedicine