News

  1. Health & Medicine

    Common heart treatment fails to help

    People prescribed beta blockers are no more likely to avoid a heart attack or stroke than those not getting them.

    By Nathan Seppa
  2. Science & Society

    Misconduct prompts most retractions

    Two-thirds of scientific papers pulled from journals are for fraud, suspected fraud and plagiarism.

    By Tina Hesman Saey
  3. Astronomy

    No companion in supernova debris

    Explosion probably resulted from two white dwarfs.

    By Nadia Drake
  4. Health & Medicine

    Male DNA found in female brains

    Postmortem sampling suggests fetal cells can slip through the blood-brain barrier.

    By Laura Sanders
  5. Astronomy

    Curiosity goes to the flow

    Sent to Mars in search of water and other evidence of habitability, the rover appears to have landed in a dry streambed.