News

  1. Tech

    Speed Bump: Tip’s tricks sort DNA, write at nanoscale

    An atomic-force microscope tip has been transformed into a microinstrument for sorting DNA and depositing nanostructures by means of cleverly applied voltages that propel molecules along the tip's surface.

    By Peter Weiss
  2. Humans

    Legal Debate: Assumptions on medical malpractice called into question

    The notion that many medical-practice lawsuits are frivolous and intended to generate undeserved riches for their plaintiffs and lawyers isn't borne out in a new study.

    By Nathan Seppa
  3. Anthropology

    Making sacrifices in Stone Age societies

    A half-dozen burials at sites in Europe and western Asia dating to between 27,000 and 23,000 years ago provide clues to possible human sacrifices.