Uncategorized

  1. Health & Medicine

    Male Choice

    The search for new contraceptives for men.

    By Damaris Christensen

  2. 19347

    I read and reread this article, hoping to find an explanation of where all those sediments have gone. From appearances, they surely all haven’t been deposited in the Gulf of California. Where else? Does anyone have any satisfying theories? Allen Glenn Abilene, Texas Sediments from the erosion of the Grand Canyon have ended up in […]

    By Science News
  3. Earth

    The Making of a Grand Canyon

    Carving this beloved hole in the ground may not have been such a long-term project.

    By Sid Perkins
  4. Computing

    Virtual stampede sees faces in crowd

    A new computer model based on particle interactions suggests ways to prevent a panicked crowd from stampeding.