News

  1. Paleontology

    Rodents tell a geologic tale

    The sudden appearance of many new species of rodents in Chile about 18 million years ago may have marked the rise of the southern Andes.

    By Sid Perkins

  2. Dementia warning

    A long-term study of people ages 65 and older in England and Wales indicates that the prevalence of brain disorders of memory and thinking, including Alzheimer's disease, increases sharply in aging populations.

    By Bruce Bower
  3. Health & Medicine

    Curry may counter cognitive decline

    A chemical found in turmeric may prevent cognitive impairment.

    By Ben Harder
  4. Health & Medicine

    Abated Breath: Serotonin problems may contribute to SIDS

    Babies who die of sudden infant death syndrome show abnormalities in the regulation of the chemical serotonin in their brains.