Feature

  1. Tech

    Pumping Alloy

    A new way to power artificial muscles improves the prospects for making lifelike humanoid robots and prosthetic limbs.

    By Peter Weiss
  2. Health & Medicine

    A Vexing Enigma

    While no drug or lab test is approved to treat or diagnose chronic fatigue syndrome, new research into the biology of the disorder may begin to shed light on the problem.

    By Ben Harder
  3. Animals

    Naked and Not

    The Damaraland mole rat may be less famous than its naked cousin, but both have some of the oddest social structures found in a mammal.

    By Susan Milius

  4. Nurture Takes the Spotlight

    What a person eats, what chemicals he or she is exposed to, and other features of a person's environment chemically modify chromosomes, thereby changing how genes are ultimately expressed.