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  1. Antidepressants get overly positive spin

    Studies finding beneficial effects of antidepressant drugs for depressed patients get published far more often than do studies that uncover no antidepressant benefits.

    By Bruce Bower
  2. Paleontology

    Life explodes twice

    The Ediacaran fauna were as varied as all animals in existence today and, more impressively, as in the Cambrian, report paleontologists.

    By Amy Maxmen
  3. Animals

    Fenced-off trees drop their friends

    Protecting acacia trees from large, tree-munching animals sets off a chain of events that ends up ruining the trees' partnership with their bodyguard ants.

    By Susan Milius
  4. Materials Science

    Life in Print

    Tissues printed with an ink-jet could provide patches for damaged organs, new cell-based materials for drug testing, new ways to probe cellular communication, living sensors, or even fuel cell–type batteries.