News

  1. Health & Medicine

    Catching macular degeneration early

    Scientists have developed a test that uses the eye's ability to adapt to darkness as a test for age-related macular degeneration, the most common cause of blindness in elderly people.

    By Nathan Seppa
  2. Animals

    That special wax lasts after courtship

    Sandpipers' special wax for their wings during the breeding season may have less to do with courting a mate and more to do with sitting on eggs.

    By Susan Milius
  3. Health & Medicine

    Stressing out

    A gene variant reduces people's response to the stress hormone cortisol, and people with the variant are less likely to have risk factors for heart disease and diabetes.