News

  1. Planetary Science

    Rovers in overtime

    NASA has extended the missions of the twin Mars rovers by 5 months, through September 2004.

    By Ron Cowen
  2. Astronomy

    Puzzle on the Edge: The moon that isn’t there

    Contrary to predictions, Sedna, the most distant object known in the solar system, does not appear to have a moon.

    By Ron Cowen
  3. Materials Science

    Crafty Carriers: Armoring vesicles for more precise and reliable drug delivery

    Materials scientists are designing tough, microscopic drug-delivery vesicles that could reach their targets intact and release their cargoes on cue.

    By Alexandra Goho
  4. Health & Medicine

    Zapping Wayward Cells: Therapy sheds light on transplant complication

    Ultraviolet light can curb graft-versus-host disease, a common complication of bone marrow transplants, a study of mice shows.