News

  1. Physics

    Magnetism piece fits no-resistance puzzle

    Experimenters have found evidence that a type of magnetic behavior correlated with the onset of zero electrical resistance in some so-called high-temperature superconductors is generic to the whole class of those materials, yielding a possible clue to how the substances lose their resistance.

    By Peter Weiss
  2. Health & Medicine

    Two steps forward, one step back

    Just a few days after the National Institutes of Health announced it was canceling a large AIDS-vaccine trial, researchers reported preliminary results from a new vaccine that appears safe.

    By Damaris Christensen
  3. Health & Medicine

    New drugs help battle HIV

    Three potential drugs in development rely on novel tactics for attacking the virus that causes AIDS.