News

  1. Health & Medicine

    Blood markers of clogging arteries emerge

    The concentration in blood of one chemically transformed cholesterol-carrying molecule may signal to doctors when a patient's heart disease has dangerously worsened.

    By Janet Raloff
  2. Earth

    Big dam in China may warm Japan

    Construction of the Three Gorges Dam across the Yangtze River in China may lead to warmer temperatures in Japan, because any diversion of water for Chinese agriculture could initiate convection in the Japan Sea that brings warmer water to the surface.

    By Sid Perkins
  3. Health & Medicine

    Natural antidepressant has its limits

    St. John's wort, a popular ingredient in herbal remedies, may not help people with moderate or severe forms of depression.