News

  1. Chemistry

    HIV knockout

    Cutting a gene in immune cells could offer a new way to treat HIV infections.

    By Patrick Barry
  2. Earth

    Precious little gems

    Ancient microdiamonds embedded inside ancient zircons found in western Australia suggest that life may have existed on Earth up to 4.25 billion years ago.

    By Sid Perkins
  3. Astronomy

    Postcards from the edge

    New data about the edge of the solar system offer surprises about how the sun interacts with our galaxy.

    By Ron Cowen
  4. Animals

    Mighty mites

    Mites that were thought to be parasites to their host wasps turn out to be bodyguards, attacking intruders.

    By Rachel Ehrenberg
  5. Physics

    Layers in a Stradivarius

    Slight differences in the wood from which violins are made might be what distinguishes a mellow-toned Stradivarius from an ordinary instrument.