News

  1. Health & Medicine

    Alzheimer’s trade-off for mentally active seniors

    Staying mentally active may delay the onset of Alzheimer’s disease but may also prompt rapid cognitive decline once symptoms appear.

    By Bruce Bower
  2. Life

    Hints of altruism among bacteria

    E. coli bacteria fight antibiotics with help from drug-resistant neighbors.

    By Gwyneth Dickey
  3. Health & Medicine

    Ovary removal proves beneficial for cancer-prone women

    BRCA mutation carriers who opt for surgery survive longer than those who forgo the operation, a new study shows.

    By Nathan Seppa
  4. Life

    Why starved flies need less sleep

    Low lipid levels keep the insects buzzing past bedtime, a new study finds, suggesting a role for metabolism in regulating sleep.