Latest Issue of Science News

February 24, 2001

  • News

    AIDS-treatment guidelines revised

    A panel of scientists has changed the guidelines for prescribing medication for HIV-infected patients, considerably lowering the suggested T-cell-count and HIV-copy thresholds.
  • Feature

    Mining the Sky

    A proposed national virtual observatory, a mammoth computer database integrating spectra, images, and other information covering the entire sky, could usher in a new age of discovery in astronomy.
  • News

    Lasers nudge into nuclear medicine

    Using a tabletop laser, researchers produced a medically useful isotope usually made in warehouse-size particle accelerators called cyclotrons.
  • News

    Cassini at Jupiter: Eyeing the Io torus

    The Cassini spacecraft has captured the most detailed images ever taken of the Io torus, a doughnut-shaped ring of charged particles that surrounds Jupiter and is replenished by the planet's moon Io.
  • News

    Ancient Mars water: A deep source?

    A new analysis of a Mars meteorite that fell to Earth suggests that much of the water believed to have once flowed on the surface of the Red Planet came from eruptions of molten rock that originated deep within the planet.
  • Feature

    A Nation Aflame

    In the wake of one of the worst fire seasons in the past 50 years, scientists are assessing risk as more people move into fire-prone areas and developing ways to better predict the behavior of--and the potential for--wildfires.