News

  1. Health & Medicine

    Smoking Gun? Mouse tests link nicotine to crib death

    Nicotine may impair a molecule that's necessary for arousing people and other animals from sleep, an effect that could account for the heightened risk of sudden infant death syndrome in babies born to women who smoked during pregnancy.

    By Nathan Seppa
  2. Materials Science

    Better-Built Diamonds: Fast growth, purity may multiply uses

    A research group has fabricated the purest diamonds ever made or found, and another has devised a way to grow high-quality diamonds up to 100 times faster than typical growth rates.

    By Peter Weiss
  3. Humans

    Small Steps: World Summit delegates wrangle over eco-friendly future

    Twenty thousand delegates from around the world met in Johannesburg last week for a contentious World Summit on Sustainable Development.