News

  1. Earth

    Dust devils produce magnetic fields

    Scientists who chase dust devils report that the tiny twisters can produce a small magnetic field that changes magnitude between 3 and 30 times per second.

    By Sid Perkins
  2. Health & Medicine

    Stress-prone? Altering the diet may help

    Tailoring a diet to fuel the brain with the precursor of a mood-enhancing chemical may help vulnerable individuals cope with stress.

    By Janet Raloff

  3. Mice can thank a hormone for the memories

    Oxytocin, a hormone previously implicated in mammalian sexual and maternal behavior, may play a role in social recognition in mice.

    By Ruth Bennett
  4. Chemistry

    Lakes reveal low phosphate concentrations

    Researchers using a new technique have found that previous measurements of phosphate, an important nutrient in lake ecosystems, have grossly overestimated its concentration.