Uncategorized

  1. Ecosystems

    Predators return

    Warming waters could push new predators into Antarctica's delicate ecosystems.

    By Ewen Callaway
  2. Agriculture

    Resistance to Bt crops emerges

    Resistance to pest-killing cotton crops is spreading among one species of caterpillar, but techniques to prevent the spread of resistance appear to be working for five other species.

    By Patrick Barry

  3. Gene variants shield against depression

    Some child-abuse victims possess specific variations in a stress-regulating gene that decrease their likelihood of developing moderate or severe depression as adults, a research team reports.

    By Bruce Bower
  4. Health & Medicine

    Nurturing Our Microbes

    Nurturing the microbes living in the human body can pay dividends—from shortening the length of colds to fighting obesity and osteoporosis.