News

  1. Health & Medicine

    Military combat marks the brain

    Regions involved in memory and attention changed after soldiers' deployment, though most eventually returned to their pre-combat state.

    By Laura Sanders
  2. Space

    Another potentially habitable world emerges

    The newfound planet orbits a common type of dwarf star, suggesting even more may be out there.

    By Nadia Drake
  3. Chemistry

    Big jobs go to loyal proteins

    Cells offload much of their nonessential work on enzymes that juggle a number of tasks.

    By Rachel Ehrenberg
  4. Humans

    DNA unveils enigmatic Denisovans

    Technical advances amplify the genetic record of a Stone Age humanlike population, ancestors of modern Melanesians.