News

  1. Animals

    A 2,200-year-old poop time capsule reveals secrets of the Andean condor

    Guano that has accumulated in a cliffside Andean condor nest for 2,200 years reveals how the now-vulnerable birds responded to a changing environment.

    By Jake Buehler
  2. Health & Medicine

    Ultrasound allows a chemotherapy drug to enter the human brain

    An early-stage clinical trial demonstrates a technique for getting a powerful chemotherapy drug past the usually impenetrable blood-brain barrier.

    By McKenzie Prillaman
  3. Neuroscience

    Neuroscientists decoded people’s thoughts using brain scans

    The finding may lead to better communication aids for people who can’t communicate easily. It also raises privacy concerns.

    By Laura Sanders
  4. Health & Medicine

    Mouse hair turns gray when certain stem cells get stuck

    Stem cells involved in giving hair its color must keep moving and changing maturity levels to prevent graying, a mouse study suggests.