Feature

  1. Astronomy

    Year in review: Kepler gets second chance at life

    This year, Kepler engineers figured out how to stabilize the almost-defunct Kepler telescope, while astronomers found hundreds more worlds.

    By Christopher Crockett
  2. Health & Medicine

    Year in review: Risks of e-cigarettes emerge

    Electronic cigarettes dispense water vapor laced with flavors and often a hefty dose of nicotine. These vapors may be far from benign, studies in 2014 suggested.

    By Janet Raloff
  3. Neuroscience

    Year in review: Young blood aids old brains

    Ingredients in young blood can rejuvenate old mice’s bodies and brains, scientists reported in 2014.

    By Laura Sanders
  4. Health & Medicine

    Year in review: Gut reacts to artificial sweeteners

    Saccharin messes with the body’s ability to metabolize fuel, a condition that often precedes diabetes, obesity and other metabolic problems.