News

  1. Chimps lead way to HIV birthplace

    A viral analysis confirms that the global AIDS epidemic originated in chimpanzees living in southeastern Cameroon.

    By Eric Jaffe

  2. Zits in tubeworms: Part of growing up

    Young tubeworms pick up the live-in bacteria they need for nutrition in a rite of passage that starts with a skin infection.

    By Susan Milius
  3. Earth

    Deep-sea action

    Scientists using remotely operated vehicles have reported the first close-up observations of a deep undersea volcano during its eruption.

    By Sid Perkins
  4. Physics

    String Trio: Novel instrument strums like guitar, rings like bell

    A new type of musical instrument, equipped with Y-shaped strings, may be the first of a family of string instruments with unusual overtones typically heard in bells or gongs.