Feature

  1. Paleontology

    A Makeover for an Old Friend

    Time and technology revamp a dinosaur classic.

    By Sid Perkins
  2. Astronomy

    X-Ray Visionary

    Proposed observatory would image black holes and coronas of nearby stars.

    By Ron Cowen

  3. Culture of the Sea

    Whales and dolphins strut their social stuff for scientists.

    By Bruce Bower
  4. Astronomy

    Invisible Universe

    X-ray astronomy opens a new window on the most energetic cosmic events.

    By Ron Cowen
  5. Health & Medicine

    Know Your Enemy

    Scientists mine the tuberculosis genome.

    By Damaris Christensen

  6. What’s Worth Saving?

    A fracas over a biological term could have huge consequences for conservation.