Feature

  1. Cosmology

    Year in Review: Dark energy gets more confusing

    New data raise the prospect of a ‘Big Rip’ destroying the cosmos.

    By Gabriel Popkin
  2. Animals

    Year in Review: Canine genealogy

    Competing clues confuse the story of dog domestication.

    By Meghan Rosen
  3. Planetary Science

    Year in Review: Methane shortage on Mars

    A trace of the gas is not enough to be a sign of life.

    By Erin Wayman
  4. Neuroscience

    Year in Review: Obama unveils brain initiative

    In April, the president announced an ambitious plan to reveal the human brain’s secrets.

    By Laura Sanders
  5. Psychology

    Year in Review: DSM-5’s controversial debut

    The diagnostic manual updates disorder criteria.