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Science Friday
January 22nd, 2000
issue

  • Popular Boys Show Their Tough Side
    Some highly aggressive boys may become popular figures in their elementary school classes and wield much influence over classroom discipline. (p. 52)
  • Oxygen limits infections from surgery
    Giving patients extra oxygen during and shortly after colorectal surgery halves the incidence of infection. (p. 52)
  • As globe warms, atmosphere keeps its cool
    Scientists confirm a confusing discrepancy between temperatures at Earth's surface and in its atmosphere. (p. 53)
  • Hubble Space Telescope: Eye wide open
    Two months after the failure of a fourth gyroscope shut it down, and 3 weeks after a shuttle crew paid it a service call, the Hubble Space Telescope is back in business. (p. 53)
  • Butterfly ears suggest a bat influence
    Researchers have found the first bat-detecting ear in a butterfly and suggest that the threat of bats triggered the evolution of some moths into butterflies. (p. 54)
  • Powerful explosive blasts onto scene
    Researchers have synthesized what could be the most powerful nonnuclear explosive known. (p. 54)
  • Lasers act on cue in electron billiards
    Electrons torn from atoms by a laser beam can shoot back into the atom and knock loose other electrons like balls in a billiard game, a finding that may have applications in nuclear fusion, particle acceleration, and fundamental physics experiments. (p. 55)
  • Obesity hormone tackles wound healing
    The hormone leptin, which seems to have many roles in the body including regulating fat storage, may speed the healing of wounds. (p. 55)
  • Cultures of Reason
    East Asian and Western cultures may encourage fundamentally different reasoning styles, rather than build on universal processes often deemed necessary for thinking. (p. 56)
  • Building a Supermodel
    Researchers are combining ergonomics and biological research with computer power to build a virtual human that can simulate human biology from anatomy down to the genetic code. (p. 60)
  • Survivors' Benefit?
    Smallpox outbreaks throughout history may have endowed some people with genetic mutations that make them resistant to the AIDS virus. (p. 63)
  • Readers' brains go native
    Brain functions linked to reading reflect cultural differences in spelling systems. (p. 58)
  • Social thinking in schizophrenia
    Training that fosters thinking skills in social situations may improve attention, memory, and social skills of people with schizophrenia. (p. 58)
  • Magnets trap neutrons for a lifetime
    A new device that uses magnets to trap neutrons may enable physicists to measure more precisely how quickly free neutrons decay, a time period with implications for understanding both the weak force and the early universe. (p. 62)
  • U.S. time now flows from atom fountain
    The United States has switched to the atomic fountain clock, which sets itself according to the resonant frequency of rising and falling balls of cold cesium. (p. 62)
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