News

  1. Environment

    PCB levels still high in Europe’s killer whales, smaller dolphins

    PCBs banned for decades still show up at extremely high concentrations in Europe’s killer whales and other dolphins.

    By Susan Milius
  2. Life

    Signs of food allergies may be present at birth

    Overactive immune cells may prime babies for food allergies.

    By Tina Hesman Saey
  3. Archaeology

    Ancient stone tools raise tantalizing questions over who colonized Sulawesi

    Hominids reached an island not far from hobbits’ home by around 200,000 years ago.

    By Bruce Bower
  4. Astronomy

    Red giants map how the Milky Way grew

    A new catalog of the ages of our galaxy’s stars confirms that the Milky Way grew from the inside out.