Feature

  1. Fat chance

    Scientists are working out ways to rev up the body’s gut-busting machinery.

    By Laura Beil

  2. Life from scratch

    Relaunching biology from the beginning.

    By Charles Petit

  3. The Truth Hurts

    Scientists question voice-based lie detection.

    By Rachel Ehrenberg

  4. Genome from a bottle

    Back Story: Cracking the code.

    By Science News
  5. Physics

    Law & Disorder: A Companion

    More resources about how physicists and philosophers understand time.

    By Science News

  6. Law & Disorder

    Physicists keep trying to explain why time flows one way.

    By Tom Siegfried

  7. Melting at the microscale

    Studying sea ice close-up may improve climate models.