Feature

  1. The incredible shrinking solar cell

    With lilliputian collectors, almost anything could be sun-powered.

    By Janet Raloff

  2. Safety in Numbers

    Mathematics offers innovative weapons for fighting terrorism.

    By Laura Sanders

  3. Enzymes Exposed

    Clearer views of the cell’s movers and shakers threaten a century-old mainstay of biology.

    By Lisa Grossman

  4. All Patterns Great and Small

    Researchers uncover the origins of creatures’ stripes and spots.

    By Tina Hesman Saey

  5. Not just a high

    Cannabis compounds show their stuff against a host of medical problems, relieving symptoms far beyond pain and nausea.

    By Nathan Seppa

  6. Fat chance

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

    By Laura Beil

  7. Life from scratch

    Relaunching biology from the beginning.

    By Charles Petit

  8. The Truth Hurts

    Scientists question voice-based lie detection.

    By Rachel Ehrenberg

  9. Genome from a bottle

    Back Story: Cracking the code.

    By Science News
  10. Physics

    Law & Disorder: A Companion

    More resources about how physicists and philosophers understand time.

    By Science News

  11. Law & Disorder

    Physicists keep trying to explain why time flows one way.

    By Tom Siegfried

  12. Melting at the microscale

    Studying sea ice close-up may improve climate models.

    By Alexandra Witze