News

  1. Astronomy

    All-sky survey makes Internet debut

    An atlas of some 5 million images from the Two Micron All-Sky Survey is now available online.

    By Ron Cowen
  2. Earth

    Mapping watersheds invites comparisons

    Computerized maps of environmental features for 154 of the largest river watersheds will soon be available to the public, free of charge.

    By Janet Raloff
  3. Health & Medicine

    Microbicide thwarts AIDS virus in monkey test

    A microbicidal gel applied vaginally prevents some transmission of the AIDS virus in monkeys.

    By Nathan Seppa
  4. Astronomy

    Cosmic Blowout: Black holes spew as much as they consume

    Supermassive black holes at the cores of galaxies can blow out as much material as they swallow, creating high-speed winds that may seed the universe with oxygen, carbon, iron, and other elements essential for life.