News in Brief

  1. Health & Medicine

    High blood glucose levels linked to dementia

    Elderly people with elevated blood glucose levels are more apt to develop dementia, whether or not they have diabetes.

    By Nathan Seppa
  2. Animals

    Noise may disrupt a bat’s dinner

    Mechanical cacophony can drown out the whispers of moving insect prey.

    By Susan Milius
  3. Neuroscience

    One sleepless night weakens resolve in the face of doughnuts

    Sleep loss changes brain activity and food preferences.

    By Laura Sanders
  4. Health & Medicine

    Space-mapping neurons found in human brain

    Grid cells may orient people in Euclidean space.

    By Laura Sanders
  5. Tech

    Bandage-like patch dissolves to deliver medicine to skin

    Flexible material gets drugs or vaccines into body painlessly.