News

  1. 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
  2. Astronomy

    No companion in supernova debris

    Explosion probably resulted from two white dwarfs.

    By Nadia Drake
  3. Health & Medicine

    Male DNA found in female brains

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

    By Laura Sanders
  4. 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.

    By Nadia Drake
  5. Tech

    Degradable devices vanish after use

    Technique combines silicon, magnesium and silk for medical implants, transistors and digital cameras that can melt away.