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  1. Animals

    Elephant Voices

    Elephants are highly social animals and have a well-developed method of communicating with each other. For nearly 30 years, scientists at a national park in Kenya have been studying elephants and their behavior. The researchers have found that these intelligent beasts use more than 70 kinds of vocal sounds and 160 different visual and tactile […]

    By Science News
  2. Earth

    DDT linked to miscarriages

    A study of Chinese women finds that the pesticide DDT can not only affect menstrual cycles but also foster miscarriages very early in pregnancy.

    By Janet Raloff
  3. Health & Medicine

    Uranium, the newest ‘hormone’

    Animal experiments indicate that waterborne uranium can mimic the activity of estrogen, a female sex hormone.