Vol. 157 No. #4
Archive Issues Modal Example

More Stories from the January 22, 2000 issue

  1. 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.

  2. Health & Medicine

    Oxygen limits infections from surgery

    Giving patients extra oxygen during and shortly after colorectal surgery halves the incidence of infection.

  3. Earth

    As globe warms, atmosphere keeps its cool

    Scientists confirm a confusing discrepancy between temperatures at Earth's surface and in its atmosphere.

  4. Astronomy

    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.

  5. Animals

    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.

  6. Chemistry

    Powerful explosive blasts onto scene

    Researchers have synthesized what could be the most powerful nonnuclear explosive known.

  7. Physics

    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.

  8. 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.

  9. Readers’ brains go native

    Brain functions linked to reading reflect cultural differences in spelling systems.

  10. Social thinking in schizophrenia

    Training that fosters thinking skills in social situations may improve attention, memory, and social skills of people with schizophrenia.

  11. Physics

    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.

  12. Physics

    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.

  13. Tech

    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.

  14. Anthropology

    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.

  15. Health & Medicine

    Survivors’ Benefit?

    Smallpox outbreaks throughout history may have endowed some people with genetic mutations that make them resistant to the AIDS virus.