News

  1. Health & Medicine

    Alzheimer Clue: Busy brain connections may have downside

    Brain areas that are chronically activated have excess amyloid beta, the waxy protein associated with Alzheimer's disease.

    By Nathan Seppa
  2. Anthropology

    Stone Age Footwork: Ancient human prints turn up down under

    An ancient, dried-up lakeshore in Australia has yielded the largest known collection of Stone Age footprints, made about 20,000 years ago.

    By Bruce Bower
  3. Earth

    Estimating a temblor’s strength on the fly

    New analyses of ground motions caused by large earthquakes suggest that it may be possible to estimate the full magnitude of such quakes immediately after they start rumbling.

    By Sid Perkins
  4. Tech

    Facing a hairy electronics problem

    Investigating why kinky metal filaments sprout spontaneously on electronic- circuit cards, researchers have found that the way metal films have been electroplated onto the surface in the first place plays a lingering role.